Blog

What Causes a Car to Overheat? Warning Signs and Prevention Few driving situations are more stressful than watching your temperature gauge rise toward the red zone. If your car is overheating, it is more than an inconvenience. It is a warning sign that the engine or cooling system needs attention. Understanding what causes a car to overheat can help you recognize warning signs early, avoid additional engine damage, and know when it is time to schedule professional service. How Your Car’s Cooling System Works Your engine generates significant heat while it runs. The cooling system helps control that heat so the engine can operate safely and efficiently. Coolant circulates through the engine, absorbs heat, and carries it to the radiator. The radiator then releases heat into the surrounding air before the coolant cycles back through the engine. Components such as the thermostat, water pump, radiator, cooling fan, hoses, and radiator cap all help this process work properly. If one of these components fails or the system loses coolant, the engine temperature can begin to rise. Common Reasons for Car Overheating Several cooling-system or engine-related problems can cause a vehicle to overheat. Here are six common causes to watch for. 1. Low Coolant Levels Low coolant is one of the most common causes of engine overheating. When there is not enough coolant in the system, heat may not be carried away from the engine effectively. Low coolant may be caused by a leak, improper refill, or another cooling-system problem that should be inspected. You may notice a puddle beneath the vehicle, dried coolant residue, a sweet smell under the hood, or a warning light on the dashboard. Never ignore signs of coolant loss. Even a small leak can eventually lead to overheating and more serious repairs. 2. A Failing Water Pump The water pump circulates coolant through the engine and radiator. If the pump fails or becomes less effective, coolant may not move through the system properly, allowing engine temperature to rise. A failing water pump may be associated with coolant leaks, unusual noises near the front of the engine, or repeated overheating. Because the water pump plays a critical role in coolant circulation, it should be inspected promptly when problems appear. 3. Thermostat Failure The thermostat regulates coolant flow between the engine and radiator based on temperature. When the engine is warming up, the thermostat remains closed. Once the engine reaches normal operating temperature, it opens so coolant can flow through the radiator. If the thermostat becomes stuck closed, coolant may not flow properly through the radiator, causing the engine to overheat quickly. A faulty thermostat can be a relatively small repair, but ignoring the problem may lead to significant engine damage. 4. Radiator or Cooling Fan Problems The radiator helps release heat from the coolant before it returns to the engine. A leaking radiator, clogged radiator core, damaged radiator cap, or faulty cooling fan can interfere with that process. Cooling fan problems may become especially noticeable while idling or driving in slow traffic, when airflow through the radiator is limited. Radiator leaks or internal blockages can also reduce the cooling system’s ability to manage engine temperature. 5. Leaking or Damaged Coolant Hoses Coolant travels through hoses that connect major parts of the cooling system. Over time, hoses can crack, loosen, soften, or deteriorate. A damaged hose can allow coolant to escape, reducing the system’s ability to control engine temperature. Regular inspections can help identify worn hoses before they fail and leave you dealing with an overheated vehicle. 6. Low Engine Oil Engine oil primarily lubricates moving engine components, but it also helps reduce friction and manage heat. If the oil level becomes too low, internal friction can increase and contribute to higher engine temperatures. Low oil is not always the cause of overheating, but it is another important warning sign that should be checked during an inspection. Warning Signs Your Car May Be Overheating An overheating engine may give you warning signs before serious damage occurs. Watch for: A temperature gauge rising toward the hot or red zone A temperature warning light on the dashboard Steam coming from beneath the hood A sweet coolant smell Visible coolant beneath the vehicle Reduced engine performance Unusual gurgling or boiling sounds If you notice these warning signs, take action promptly rather than continuing to drive. What to Do When Your Engine Is Overheating If your vehicle begins overheating while you are driving, remain calm and focus on reaching a safe location. Pull over safely as soon as possible. Turn off the engine after you have stopped. Keep clear of steam coming from beneath the hood. Never remove the radiator cap or pressurized coolant cap while the engine is hot. Allow the vehicle to cool before checking the coolant reservoir. Arrange for professional assistance if the cause is unknown or the vehicle continues to overheat. Do not continue driving an overheated vehicle. Continued operation can damage the head gasket, warp the cylinder head, or cause other costly engine damage. How to Help Prevent Car Overheating Preventive maintenance can help reduce the risk of engine overheating and unexpected breakdowns. Check your coolant level according to your vehicle manufacturer’s recommendations, and use the correct coolant mixture for your vehicle. If the coolant level drops repeatedly, schedule an inspection rather than simply topping it off again. It is also important to have the cooling system inspected for worn hoses, leaks, radiator concerns, water pump problems, thermostat failure, and cooling fan issues. Your vehicle’s recommended maintenance schedule can help determine when coolant replacement or cooling-system service is needed. Keeping an eye on the temperature gauge, especially during hot weather or heavy traffic, can also help you recognize problems before the engine becomes severely overheated. Schedule Cooling System Service in Covington, IN Engine overheating is a serious concern, but many cooling-system problems can be addressed before they lead to major engine damage. Whether your vehicle has low coolant, a failing thermostat, radiator trouble, worn hoses, or water

Bad Car Thermostat Symptoms: 7 Warning Signs You Shouldn’t Ignore Your car’s thermostat is a small but important part of the cooling system. It helps regulate coolant flow between the engine and radiator so the engine can reach and maintain a proper operating temperature. When the thermostat fails, your vehicle may begin showing signs such as overheating, weak cabin heat, unusual temperature readings, or reduced fuel efficiency. Recognizing the common signs of a bad thermostat may help you address cooling-system problems before they lead to more serious engine damage. What Does a Car Thermostat Actually Do? The thermostat controls coolant flow based on engine temperature. When the engine is cold, the thermostat remains closed so the engine can warm up efficiently. Once the engine reaches its normal operating temperature, the thermostat opens and allows coolant to travel through the radiator, where heat is released before the coolant circulates back through the engine. The thermostat functions as a temperature-controlled valve. As coolant warms, its internal element helps open the valve so coolant can flow through the radiator. If the thermostat becomes stuck open, stuck closed, or fails to operate correctly, engine temperature can become difficult to regulate. 7 Bad Car Thermostat Symptoms to Watch For 1. Your Temperature Gauge Fluctuates One possible sign of a faulty thermostat is an unusual temperature gauge reading. You may notice the gauge climbing higher than normal, staying unusually low, or changing repeatedly while you drive. A properly operating thermostat helps keep engine temperature within a stable range. When that temperature becomes inconsistent, the thermostat or another cooling-system component may need attention. 2. Your Engine Overheats Quickly If your engine overheats soon after you begin driving, the thermostat may be stuck closed. In this position, coolant may not circulate properly through the radiator, causing heat to build up quickly inside the engine. Engine overheating should never be ignored. Excessive heat can damage gaskets, warp engine components, and lead to more expensive repairs. If your temperature warning light comes on or the gauge enters the hot range, pull over safely, turn off the engine, and arrange for an inspection before continuing to drive. 3. Your Engine Runs Too Cold A thermostat that is stuck open can allow coolant to circulate before the engine reaches its proper operating temperature. As a result, the engine may take too long to warm up or may continue running cooler than normal. An engine that does not reach normal operating temperature may operate less efficiently and use more fuel. You may also notice that the temperature gauge remains lower than usual during normal driving. 4. Your Heater Blows Lukewarm or Cold Air Your vehicle’s cabin heater relies on heat from the engine coolant. If the thermostat is stuck open and the engine does not warm up properly, the heater may blow lukewarm or cold air instead of producing steady heat. This symptom may become especially noticeable during colder weather, when the cabin heater struggles to warm the vehicle interior. Weak heat can also result from low coolant, heater core problems, or other cooling-system concerns, so an inspection is the best way to determine the actual cause. 5. You Notice Coolant Leaks Near the Thermostat Housing Coolant near the thermostat housing may indicate a failed gasket, worn seal, cracked housing, or another nearby cooling-system problem. You may notice a puddle beneath the vehicle, dried coolant residue around the housing, a sweet smell after driving, or a low coolant warning light. A coolant leak should never be ignored. Low coolant can reduce the system’s ability to control engine temperature and may lead to overheating. 6. You Hear Gurgling or Boiling Sounds Gurgling or boiling sounds may occur when an engine is overheating or when coolant is not circulating properly. In some cases, a thermostat problem may contribute to these symptoms. However, unusual cooling-system noises may also be related to low coolant, trapped air, a coolant leak, radiator problems, or a failing water pump. A technician can inspect the system and identify the source of the noise. 7. Your Fuel Economy Drops Without an Obvious Reason If the thermostat is stuck open and the engine remains too cool, fuel efficiency may decrease. The vehicle may use more fuel because the engine is not operating within its intended temperature range. Although poor fuel economy can have several causes, a low temperature gauge reading combined with weak cabin heat and reduced mileage may point to a thermostat or cooling-system issue. When to Consider Thermostat Replacement If you are noticing one or more of these symptoms, schedule an inspection of your thermostat and cooling system. Thermostat replacement is often a manageable repair, but delaying service can allow overheating or coolant-loss problems to become more serious. A professional inspection can help determine whether the concern is caused by the thermostat, coolant level, thermostat housing, radiator, water pump, heater core, or another part of the cooling system. Get Trusted Auto Repair Services in Covington, IN At Newnum & Sons Garage, our technicians can inspect your cooling system, diagnose thermostat-related concerns, and recommend the appropriate repair. Whether your vehicle is overheating, running too cold, losing coolant, or producing weak cabin heat, we can help identify the source of the problem. Schedule Cooling System Service Today A faulty thermostat can lead to overheating, poor heater performance, reduced fuel efficiency, and possible engine damage when left unaddressed. If your temperature gauge is behaving unusually or your vehicle is showing signs of a cooling-system problem, schedule an inspection promptly. Call 765-793-3334 to schedule thermostat or cooling-system service with Newnum & Sons Garage in Covington, IN.

What to Do When Your Brake Pedal Travels to the Floor While Driving Few driving situations are more alarming than pressing the brake pedal and feeling it sink toward the floor. Whether the pedal drops suddenly or gradually feels lower than usual, it is not a problem to ignore. A low or sinking brake pedal can indicate that your braking system is no longer operating safely. This guide explains what may cause a brake pedal to go to the floor, what to do if it happens while driving, and when to seek professional brake service. What It Means When the Brake Pedal Goes to the Floor Most vehicle braking systems rely on hydraulic pressure. When you press the brake pedal, brake fluid moves through the brake lines and helps the calipers or wheel cylinders apply the brakes at the wheels. If the system loses hydraulic pressure, the pedal may travel farther before the brakes fully engage. In severe cases, the vehicle may have significantly reduced stopping power. A brake pedal that sinks to the floor often indicates a brake fluid leak, air in the lines, a failing master cylinder, or another issue that requires immediate inspection. Common Causes of a Brake Pedal Sinking to the Floor Brake Fluid Leak One of the most common causes of a brake pedal sinking to the floor is a brake fluid leak. Fluid can leak from a brake line, hose, caliper, wheel cylinder, master cylinder, or reservoir connection. When brake fluid escapes and air enters the system, the air compresses more easily than brake fluid. This can make the pedal feel soft, spongy, or unusually low. You may notice fluid near a wheel or underneath the engine bay. However, not every leak is visible. An internal master cylinder leak, for example, may cause pedal problems without leaving a puddle on the ground. Failing Master Cylinder The brake master cylinder converts pressure from your foot into hydraulic pressure that operates the brakes. If its internal seals wear out or fail, brake fluid may move past the seals instead of building the pressure needed for effective braking. This can cause the pedal to sink toward the floor even when the brake fluid reservoir appears full. A failing master cylinder may need to be replaced. Because the braking system directly affects vehicle safety, this repair should be handled by a trained technician. Air in the Brake Lines Air in the brake lines can make the pedal feel soft or spongy and increase the amount of pedal travel before the brakes respond. This may happen after brake work if the system was not properly bled, or after a leak or opened brake line allowed air into the system. Bleeding the brakes removes trapped air and helps restore proper pedal feel, but the source of the air should also be identified and repaired. Worn or Misadjusted Brake Components Worn brake pads, worn brake shoes, or poorly adjusted rear drum brakes may contribute to increased pedal travel and reduced braking performance. Even when these parts are not the only cause of a low pedal, worn components can reduce braking effectiveness and should be addressed promptly. A complete brake inspection can determine whether pads, shoes, rotors, drums, calipers, or related hardware need service. ABS or Hydraulic Control System Problems In some vehicles, an ABS pump or another hydraulic control system fault can contribute to unusual pedal behavior. These issues may require diagnostic equipment to identify properly. If the ABS warning light is on or the pedal feels inconsistent, a technician can inspect the system and check for stored fault codes. What About a Hard Brake Pedal? A brake pedal that is hard to press is different from a pedal that sinks to the floor. A hard pedal may be related to the brake booster or another power-assist issue. Both symptoms require attention, but they usually point to different problems. If your pedal is hard, low, spongy, or inconsistent, have the brake system inspected as soon as possible. What to Do If the Brake Pedal Goes to the Floor While Driving If your brake pedal suddenly goes to the floor while you are driving, focus on slowing the vehicle and reaching a safe stopping location. Stay calm and keep control of the vehicle. Avoid abrupt steering movements. Take your foot off the accelerator. Allow the vehicle to begin slowing down. Turn on your hazard lights when it is safe to do so. This helps alert nearby drivers. Try pumping the brake pedal a few times. In some situations, this may temporarily restore enough pressure to help slow the vehicle. Gradually shift to a lower gear when your vehicle allows it. Engine braking may help reduce speed. Avoid sudden downshifts. Apply the parking brake carefully and gradually if needed. Applying it too quickly may cause the rear wheels to lock and the vehicle to skid. Steer to a safe location and stop the vehicle. Once stopped, do not continue driving. Arrange for a tow and a professional inspection. A vehicle with a sinking brake pedal should not be driven until the cause has been identified and repaired. Always follow the emergency guidance in your vehicle owner’s manual, as brake and parking brake systems can differ by vehicle. Get Your Brakes Inspected Before the Problem Gets Worse A brake pedal that feels soft, low, or inconsistent is a warning sign that should not be ignored. Even if the brakes still appear to work, the problem may worsen without warning. A brake inspection can help identify fluid leaks, master cylinder issues, worn brake components, air in the hydraulic system, or other problems affecting your stopping ability. Schedule Brake Service in Covington, IN A brake pedal that travels to the floor is a serious safety concern that requires prompt attention. Whether the cause is a brake fluid leak, air in the lines, a failing master cylinder, or worn brake components, the next step is a professional inspection. At Newnum & Sons Garage in Covington, IN,

7 Signs of a Bad Clutch Master Cylinder You Shouldn’t Ignore If you drive a vehicle with a manual transmission, the clutch system plays an essential role in keeping you in control. At the center of the hydraulic clutch system is the clutch master cylinder, a small but important component that converts pressure from your foot into hydraulic force. When the clutch master cylinder begins to fail, shifting gears can become difficult or unpredictable. The symptoms may appear gradually, making them easy to overlook until the vehicle becomes harder or unsafe to drive. Here are seven signs of a bad clutch master cylinder that should not be ignored. How the Clutch Hydraulic System Works When you press the clutch pedal, the clutch master cylinder pushes hydraulic fluid through the clutch line to the slave cylinder. The slave cylinder then helps activate the clutch release mechanism, allowing the clutch to disengage so you can shift gears smoothly. Because this is a hydraulic system, each component must work properly. A worn seal, damaged line, leaking cylinder, or low fluid level can reduce pressure and affect clutch operation. 1. The Clutch Pedal Feels Soft or Spongy One of the earliest warning signs is a clutch pedal that feels soft or spongy when pressed. A properly working pedal should provide consistent resistance. A spongy pedal may indicate air in the hydraulic system, low fluid, or worn internal seals. Unlike hydraulic fluid, air compresses easily. When air enters the system, the clutch pedal may feel mushy and fail to transfer pressure effectively. Bleeding the hydraulic system may temporarily improve pedal feel in some cases. However, when the problem returns, a leak or failing component may need professional attention. 2. The Clutch Pedal Sinks to the Floor A clutch pedal that sinks to the floor or fails to return is a serious warning sign. This can happen when the master cylinder is no longer able to maintain enough hydraulic pressure to operate the clutch properly. When the clutch cannot disengage, shifting gears may become extremely difficult or impossible. If your clutch pedal suddenly stays on the floor, avoid continuing to drive the vehicle and arrange for an inspection. 3. Difficulty Shifting Gears When the clutch master cylinder cannot generate sufficient pressure, the clutch may not fully disengage when you press the pedal. As a result, shifting gears may feel stiff, difficult, or inconsistent. You may especially notice problems when shifting into first gear, reverse, or between gears while driving. Because several clutch and transmission issues can cause shifting problems, a technician should inspect the hydraulic system before recommending repairs. 4. Grinding When Trying to Shift Grinding noises while shifting can occur when the clutch is not fully disengaged. If the master cylinder is failing, the clutch may remain partially engaged even when the pedal is pressed. Grinding should not be ignored because repeated rough shifting can contribute to additional wear on transmission components. A professional inspection can help determine whether the issue is hydraulic or caused by another clutch or transmission problem. 5. Clutch Fluid Leaks The clutch master cylinder relies on a sealed hydraulic system. When internal seals wear out or the cylinder becomes damaged, hydraulic fluid may begin to leak. Depending on your vehicle, you may notice fluid: Near the clutch pedal inside the cabin Around the firewall where the master cylinder is mounted In or near the clutch fluid reservoir Under the vehicle near the slave cylinder or bell housing area Low fluid can reduce hydraulic pressure and cause the clutch system to stop working correctly. Because some vehicles share a fluid reservoir between the clutch and brake systems, check your owner’s manual or have a technician inspect the vehicle promptly. 6. The Clutch Pedal Sticks or Returns Slowly A clutch pedal that sticks, hesitates, or slowly returns to its normal position may indicate a hydraulic problem. Internal wear in the master cylinder, damaged seals, contaminated fluid, or a related component issue can interfere with smooth pedal operation. This symptom may become more noticeable in stop-and-go traffic, where frequent clutch use is required. When the pedal no longer responds normally, scheduling an inspection early can help prevent a more disruptive failure. 7. Low or Discolored Clutch Fluid Check the clutch fluid reservoir if it is accessible and safe to inspect. Fluid that repeatedly drops below the recommended level may indicate a leak somewhere in the hydraulic system. Discolored or contaminated-looking fluid may also signal that the system needs service. However, dark fluid alone does not confirm that the clutch master cylinder is faulty. A technician can inspect the master cylinder, slave cylinder, lines, and fluid condition to identify the actual cause. Is It the Master Cylinder or the Slave Cylinder? A failing clutch master cylinder and a failing slave cylinder can produce similar symptoms. Both may cause a soft pedal, fluid loss, difficulty shifting, or an inability to disengage the clutch. A master cylinder leak may be visible near the clutch pedal, reservoir, or firewall. A slave cylinder issue may appear closer to the transmission or bell housing area, depending on the vehicle’s design. Because these symptoms overlap, replacing parts without a proper diagnosis can lead to unnecessary costs. A qualified technician can inspect the hydraulic clutch system and identify which component needs attention. Do Rising RPMs Mean the Master Cylinder Is Bad? When engine RPMs increase without a matching increase in speed, the clutch may be slipping. This is commonly associated with a worn clutch disc, pressure plate, or another clutch assembly problem rather than a failing clutch master cylinder alone. Since clutch symptoms can overlap, it is best to have the vehicle professionally inspected before assuming which part is responsible. Why You Should Not Ignore Clutch Hydraulic Problems A failing clutch master cylinder can leave you unable to shift gears or safely operate your vehicle. What begins as a soft pedal or small fluid leak can eventually become a complete loss of clutch control. Addressing the issue early can help

Muffler vs. Resonator: What Is the Difference for Your Car? When comparing a muffler vs. a resonator, it is easy to understand why drivers confuse the two. Both are part of the exhaust system, and both help manage the sound your vehicle produces. However, they do not serve the same purpose. A muffler primarily reduces overall exhaust volume, while a resonator helps control specific tones, such as humming or droning sounds at certain speeds. Understanding the difference can help you make informed decisions when your exhaust system needs repairs or replacement parts. What Does a Muffler Do? The muffler is one of the most recognizable components of a vehicle’s exhaust system. It is generally located near the rear of the vehicle, after the catalytic converter, and its main purpose is to reduce the noise created by exhaust gases leaving the engine. As the engine runs, exhaust gases travel through the exhaust system and eventually reach the muffler. Inside the muffler, chambers, tubes, and sound-absorbing materials help reduce noise before the gases exit through the tailpipe. Without a functioning muffler, your vehicle may sound significantly louder than normal, especially during acceleration. Common Types of Mufflers Different muffler designs can affect both the sound and character of a vehicle’s exhaust. Common types include: Chambered mufflers: These use internal chambers to help reduce sound while often producing a deeper exhaust tone. Straight-through mufflers: Sometimes called glasspacks, these use a perforated tube surrounded by sound-absorbing material to reduce noise while allowing exhaust gases to flow through. Turbo mufflers: These use internal passages and chambers to provide quieter, more refined sound control. The right muffler depends on your vehicle, driving preferences, and whether you want a quieter ride or a more noticeable exhaust tone. What Does a Resonator Do? A resonator is another exhaust system component, but it is not the same as a muffler. It is often installed between the catalytic converter and the muffler, although its location can vary depending on the vehicle. Instead of reducing overall exhaust volume, a resonator is designed to reduce specific sound frequencies. In particular, it may help control the droning or humming sound that can occur while cruising at a steady speed. This type of exhaust drone can become especially noticeable inside the cabin during highway driving. A properly functioning resonator helps smooth out these unwanted tones without dramatically changing the overall volume of the exhaust system. When a resonator is removed or damaged, a vehicle may develop a raspier, harsher, or more noticeable exhaust sound, depending on the overall system design. Do You Need Both a Muffler and a Resonator? Many factory exhaust systems include both a muffler and a resonator because they perform different jobs. The muffler reduces the overall noise level produced by the exhaust system. The resonator helps reduce certain tones or vibrations that may otherwise create an unpleasant sound inside the cabin. Together, these parts can help provide a quieter, smoother driving experience. Removing or replacing either component may change the way your vehicle sounds. In some cases, modifications can also affect how the exhaust system performs, depending on the vehicle and the parts installed. A performance muffler paired with a resonator may create a cleaner exhaust tone without excessive cabin noise. Removing both components, however, may leave your vehicle sounding louder, raspier, or more prone to highway drone. Signs Your Muffler or Resonator May Need Attention Over time, exhaust components can wear out because of heat, moisture, rust, road debris, or physical damage. You may need an inspection if you notice: Louder exhaust noise than usual Rattling or vibrating sounds underneath the vehicle A humming or droning sound at certain speeds Visible rust or corrosion on exhaust components Exhaust odors near or inside the vehicle Changes in vehicle performance or fuel efficiency Exhaust odors inside the cabin should be taken seriously. Because exhaust gases can be hazardous, arrange for a professional inspection promptly if you smell fumes while driving. Muffler vs. Resonator: Which One Is Causing the Problem? Because the muffler and resonator are both parts of the exhaust system, it may be difficult to identify the source of a noise or odor without an inspection. A damaged muffler may cause the vehicle to sound much louder overall. A failing resonator may create rattling, buzzing, or excessive drone at certain speeds. However, similar symptoms can also result from damaged pipes, loose connections, rusted hangers, or leaks elsewhere in the exhaust system. A technician can inspect the system, determine which component is damaged, and recommend the appropriate repair or replacement. Schedule Exhaust System Service in Covington, IN The difference between a muffler and a resonator comes down to purpose. A muffler helps reduce overall exhaust noise, while a resonator helps control specific tones such as drone, hum, or harsh buzzing. When your vehicle starts making unusual noises or producing exhaust odors, do not ignore the problem. The team at Newnum and Sons Garage in Covington, IN, can inspect your exhaust system and recommend the repair your vehicle needs. Call 765-793-3334 to schedule your appointment today.

7 Signs of an Exhaust Leak You Shouldn’t Ignore Your car or truck may warn you about a problem through unusual sounds, strange odors, or a noticeable drop in performance. When an exhaust leak develops, these symptoms can appear long before the issue becomes more serious. A leak in the exhaust system is more than an inconvenience. It can affect fuel efficiency, allow harmful gases to enter the cabin, and contribute to damage in nearby components over time. Here are seven signs to watch for. 1. Unusual Noises From the Engine or Undercarriage One of the earliest signs of an exhaust leak is an unusual sound. A ticking, hissing, or popping noise, especially during a cold start or while accelerating, may indicate a crack, loose connection, or damaged gasket somewhere in the exhaust system. A ticking or hissing sound near the engine is often associated with the exhaust manifold. When gases escape through a damaged manifold or gasket, the noise may become more noticeable as the engine runs or when you press the accelerator. 2. A Strong Exhaust Smell Inside the Cabin If you smell exhaust fumes inside your car while driving, do not ignore them. This may mean gases are escaping from the exhaust system and entering the passenger area. This warning sign requires prompt attention because vehicle exhaust can contain carbon monoxide, a colorless and odorless gas that can be dangerous in enclosed spaces or at high concentrations. If you notice exhaust odors inside your vehicle, schedule an inspection as soon as possible. 3. Decreased Fuel Efficiency An exhaust system problem can affect how efficiently your engine runs, especially if the leak interferes with sensor readings or overall engine performance. When you begin filling up more often without a change in your usual driving habits, it may be worth having the vehicle inspected. Reduced fuel efficiency can have many causes, but an exhaust issue may be one of them. 4. Visible Soot or Corrosion Near Exhaust Components When the vehicle is off and fully cooled, look for black soot near exhaust joints, gaskets, pipes, or the manifold. Soot buildup can appear near the location where exhaust gases are escaping. Rust and corrosion are also signs to watch for. Moisture, road conditions, and repeated heat exposure can gradually weaken exhaust pipes, the muffler, and related components, increasing the chance of leaks. 5. Vibrations in the Steering Wheel, Pedals, or Floor A damaged exhaust component may cause unusual vibrations that you can feel through the gas pedal, steering wheel, or floor of the vehicle. Larger leaks or loose exhaust parts may create more noticeable shaking or rattling. When your car feels different while idling or driving, an exhaust inspection can help determine whether the system is contributing to the problem. 6. Check Engine Light or Failed Emissions Test Sensors within your vehicle monitor exhaust flow and emissions. When a leak occurs near certain sensors, it can interfere with their readings and cause the check engine light to turn on. An exhaust leak may also contribute to a failed emissions inspection, especially when gases escape before they pass through the catalytic converter. Because the catalytic converter helps reduce harmful emissions, leaks ahead of it can lead to higher pollution levels. 7. Rough Idling or Poor Engine Performance A leak near the exhaust manifold or gasket can affect engine performance. You may notice a rough idle, hesitation during acceleration, reduced power, or a general sense that the vehicle is not running as smoothly as it should. Addressing exhaust problems early can help prevent a minor repair from becoming a more expensive issue involving additional components. How to Identify a Possible Exhaust Leak at Home A basic visual inspection may help you spot warning signs before visiting a repair shop. With the engine turned off and fully cooled, look for visible soot, cracks, rust, or loose connections around accessible exhaust components. Avoid touching exhaust parts until they are completely cool, as they can become extremely hot. Do not crawl underneath a running vehicle or attempt repairs without the proper equipment and experience. Because exhaust leaks can be difficult to locate and may involve harmful gases, a professional inspection is often the safest way to confirm the source of the problem and complete the necessary repair. Schedule an Exhaust Inspection in Covington, IN When you notice any of these signs, do not put off an inspection. A small exhaust leak can become a larger and more expensive repair when left unaddressed. The team at Newnum and Sons Garage in Covington, IN, can diagnose exhaust system problems and recommend the appropriate repair for your vehicle. Call 765-793-3334 or visit newnumsgarage.com to schedule your auto repair appointment and get back on the road with confidence.

10 Rough Idle Causes and How to Fix Each One Fast Most vehicles idle between 600 and 1,000 RPM when sitting still. When your car starts shaking, the RPM needle bounces, or the engine feels like it might stall, something is clearly off. A rough idle is one of the most common engine problems drivers deal with, and the good news is that most causes are fixable once you know what you are looking for. Here is a breakdown of the most common causes of rough idle and what you can do about each one. What Does a Rough Idle Actually Mean? When a car engine is running smoothly, you barely notice it. The internal combustion engine fires in a steady rhythm, the air-fuel mixture burns cleanly in each cylinder, and the car sits quietly at a low RPM. When something disrupts that rhythm – whether it is too much air, not enough fuel, or a misfiring engine – the engine idle becomes uneven. You might feel a vibration through the seat, notice the RPM dipping too low, or watch the check engine light flick on. Common Causes of Rough Idle and How to Fix Them Worn or Fouled Spark Plugs A bad spark plug is one of the most common causes drivers overlook. The spark plug ignites the air-fuel mixture inside the cylinder, and when it is worn, cracked, or covered in carbon buildup, it misfires. A misfire means one or more cylinders are not firing properly, which causes the engine to idle roughly and shake. Fix: Replace spark plugs according to your vehicle’s maintenance schedule. Most plugs last 30,000 to 100,000 miles, depending on the type. If you are noticing ignition problems alongside a rough idle, start here. Vacuum Leak The intake manifold and various hoses throughout the engine bay carry air and fuel into the combustion chamber. When a gasket cracks or a hose comes loose, a vacuum leak lets unmetered air sneak into the engine. This throws off the air-fuel ratio and causes the engine to idle roughly at low RPM. Fix: Listen for a hissing sound near the intake manifold or throttle area. A vacuum leak is best diagnosed with a smoke test or by spraying carburetor cleaner near suspected spots while the engine is running. Dirty or Clogged Fuel Injectors Fuel injectors spray a precise amount of fuel into each cylinder. Over time, dirty fuel or carbon buildup can clog them, disrupting the air-fuel mixture and causing a misfire. When one or more fuel injectors are not flowing correctly, it becomes almost unavoidable for the engine to run rough. Fix: Use a quality fuel injector cleaner or have the injectors professionally cleaned or replaced. This is especially important if you notice the issue gets worse on cold starts. Dirty Throttle Body The throttle body controls how much air enters the engine. When carbon and grime coat the inside of the throttle body, it restricts airflow and messes with the engine’s idle speed. A dirty throttle body is a surprisingly common cause of rough idle, especially on higher-mileage vehicles. Fix: Cleaning the throttle body with a dedicated cleaner is a straightforward fix. It is part of routine tune-up service and can restore smooth idling quickly. Faulty Mass Airflow Sensor The mass airflow sensor measures the amount of air entering the engine and sends that data to the engine control unit. If this sensor is dirty or failing, the engine receives incorrect airflow readings and cannot properly calculate the right amount of fuel to inject. The result is an unstable or low RPM idle. Fix: Cleaning the mass airflow sensor with sensor-safe spray often resolves the issue. If the sensor has failed entirely, replacement is necessary. A check engine light is a common warning sign here. Bad Oxygen Sensor The oxygen sensor monitors exhaust gases leaving the engine and helps balance the air-fuel mixture in real time. A failed sensor sends incorrect readings, causing the engine to run either too rich or too lean. Either condition can cause the engine to idle roughly, reduce fuel economy, and trigger the check engine light. Fix: Check for diagnostic trouble codes using a scan tool. If the oxygen sensor is the culprit, replacing it is a straightforward repair that restores proper engine performance. Restricted Fuel Filter or Weak Fuel Pump A restricted fuel filter or failing fuel pump reduces fuel pressure in the fuel delivery system, starving the engine of the fuel it needs to idle smoothly. When fuel delivery is inconsistent, the engine hesitates, stumbles, or may even stall at idle. Fix: Replace the fuel filter on schedule and have the fuel pump tested if you suspect weak fuel pressure. Neglecting this can cause the engine to stall and lead to more serious engine damage over time. If your car dies at a stop, learn more about why your car stalls when stopping. EGR Valve Problems The exhaust gas recirculation (EGR) valve recirculates a portion of exhaust gas back into the intake manifold to reduce emissions. When the valve gets clogged or sticks open, it disrupts combustion and causes a rough idle, especially at low RPM. This is a common issue in both gasoline and diesel vehicles. Fix: Inspect and clean the EGR valve, or replace it if it is failing. A check engine light code related to the EGR system will help confirm the diagnosis. Low Compression Low compression in one or more cylinders is a more serious cause of a rough idle. It can result from worn piston rings, a damaged valve, or a blown head gasket. When a cylinder cannot build enough compression, combustion is incomplete, and the engine shakes noticeably at idle. Fix: A compression test will confirm low compression. Depending on the cause, repairs can range from a valve adjustment to a full engine rebuild. This is a job for a professional. If you are dealing with these kinds of engine problems, check out the professional engine repair services at Newnum and

Solid Check Engine Light vs Flashing: What Each Signal Really Means for Your Car That little amber glow on your dashboard can trigger a wave of panic – or, for some drivers, a shrug and a “I’ll deal with it later.” But here is the truth: not all check engine lights are created equal. The difference between a flashing and a solid signal matters more than most people think Let us break it all down in plain language so you know exactly what your car is trying to tell you. What Is the Check Engine Light, Anyway? The check engine light is part of your car’s onboard diagnostics system, also known as OBD-II. When something goes wrong with your engine, exhaust system, sensors, or other key components, the car’s diagnostic system detects it and stores diagnostic trouble codes. The light on the dashboard is simply the vehicle’s way of saying, “Hey, something needs attention.” The challenge is that one symbol covers a huge range of problems – from something as minor as a loose gas cap to something as serious as engine damage. That is why the way the light behaves matters so much. Understanding the Difference: Solid vs Flashing Understanding check engine light behavior starts with one key difference: is the light steady, or is it blinking? What a Solid Check Engine Light Means A steady check engine light illuminates when the car’s computer has detected an issue that needs attention, but is not necessarily causing immediate harm to your vehicle right now. The solid check engine light indicates a problem worth investigating, but it is generally not a “pull over immediately” situation. A solid light might be triggered by things like: A loose gas cap allows fuel vapors to escape A faulty oxygen sensor affects the air-fuel ratio A failing mass flow sensor is causing poor fuel economy Issues with the exhaust gas recirculation valve Minor engine sensor failures Spark plug or ignition coil wear A steady check engine light is still a warning light. Ignoring it for weeks or months can allow a minor engine issue to grow into something far more serious and costly. What a Flashing Check Engine Light Means A flashing check engine light is a different story entirely. When the light is blinking, your car is not just asking for attention – it is demanding immediate action. A blinking check engine light typically signals an active engine misfire, meaning one or more cylinders are not firing correctly during the combustion cycle. Here is why that is so urgent: when a misfire happens, raw fuel and unburned fuel pass through the combustion chamber and enter the exhaust system. This raw fuel can quickly overheat and damage the catalytic converter – one of the most expensive components in your vehicle’s emissions control system. Replacing a catalytic converter is rarely cheap, and continuing to drive with a flashing check engine light dramatically increases the risk of turning a manageable repair into a catastrophic engine problem. If you see a check engine light flashing, the right move is to stop driving as soon as it is safe to do so and call a mechanic. Common Causes Behind Check Engine Light Issues Both types of check engine lights can be triggered by a wide range of issues. Here is a closer look at what commonly triggers the check engine light in each scenario. Common Causes of a Steady Check Engine Light The steady check engine light appears most often when a sensor or non-critical system sends a fault signal to the car’s computer. An oxygen sensor that is reading the exhaust gas incorrectly is one of the most common causes. Other triggers include problems with the ignition system, a failing spark plug, a cracked or worn gasket, or even a loose gas cap that allows pressure to escape from the fuel system. Issues with the transmission, throttle position, variable valve timing, or even a failing vehicle battery can also trigger a solid check engine light. The car is still drivable in most cases, but you should schedule a diagnostic check soon. Common Causes of a Flashing Check Engine Light A flashing CEL almost always points to an engine misfire. The misfire might be caused by a worn spark plug that is no longer creating a clean ignition, a bad ignition coil that is not delivering enough energy to the combustion chamber, or a fuel injection problem that is disrupting the proper air-fuel ratio. In some cases, a flashing check engine light can also signal issues with engine compression, a timing belt problem, or head gasket failure. These are all situations where fuel entering the exhaust can cause serious and rapid damage. A mechanic needs to look at this immediately. Solid and Flashing Check Engine Light: How to Respond Understanding check engine light behavior is only useful if you know what to do next. If the light is solid: Schedule an appointment with a mechanic as soon as you reasonably can. You do not need to abandon your car on the side of the road, but you should not keep ignoring it either. The longer you wait, the higher the risk of an expensive repair. A good rule of thumb is to get it checked within a few days. If the light is flashing: Treat this as an emergency. Reduce your speed, avoid heavy acceleration, and stop driving when safe. The difference between a flashing and a solid light can literally be the difference between a $300 fix and a $2,000 repair. In both cases, getting proper diagnostics done is the only way to know for sure what you are dealing with. Modern vehicles store specific codes that help technicians pinpoint the exact problem. At Newnum and Sons Garage, the team uses advanced computer diagnostics services to read these codes accurately and explain the findings in plain language before any work begins. Why You Should Never Ignore Check Engine Lights Some drivers see a check engine light and

6 Head Gasket Symptoms You Shouldn’t Ignore (and What They Mean) Your car has been running a little off lately. Maybe the temperature gauge is creeping higher than usual, or you noticed something strange in the exhaust. You’re not sure what’s wrong, but something feels different. There’s a chance your head gasket is trying to tell you something. The head gasket is an engine component that does a critical job. The head gasket is a seal that sits between the engine block and cylinder head, keeping coolant, oil, and combustion gases in their proper passages. When it starts to fail, the consequences can escalate quickly. Knowing the head gasket symptoms early can save you from a much bigger repair bill down the road. What Does a Head Gasket Actually Do? The cylinder head gasket seals the connection between the engine block and cylinder head. It has to hold up against extreme heat and pressure while keeping coolant and oil from mixing together and preventing exhaust gas from escaping the combustion chamber. Every time your engine fires, the piston compresses a fuel and air mixture inside the cylinder. That compression creates intense force, and the gasket is what keeps everything contained. When a gasket blows, that careful separation breaks down, and engine problems follow fast. Common Signs of a Blown Head Gasket Recognizing the warning signs early is everything. Here are the most common signs of a blown head gasket to watch for. White Smoke From the Exhaust One of the clearest blown head gasket symptoms is white smoke pouring from the exhaust. This happens when coolant leaking into the combustion chamber gets burned along with the fuel. The result is thick, sweet-smelling white smoke that is different from the light condensation you might see on a cold morning. If the white smoke is heavy and doesn’t disappear after the engine warms up, that’s a red flag. A leaking head gasket is often the culprit, and continuing to drive the vehicle in this condition risks severe engine damage. Engine Overheating Engine overheating is one of the most serious head gasket symptoms you can experience. The head gasket can cause coolant to leak either internally or externally, and when coolant levels drop, the cooling system can’t regulate engine temperatures properly. Check your coolant reservoir. If the level keeps dropping without any visible external coolant or oil puddles underneath the car, there’s a good chance the coolant is leaking internally. Don’t ignore a rising temperature gauge – catching this early can prevent a cracked engine block or warped cylinder head. If your car’s heating and cooling system has been acting up, getting a proper inspection matters. Problems with the car heating and cooling system repair can reveal issues before they become catastrophic. Milky or Contaminated Oil Pop the oil cap and take a look. If you see a creamy, chocolate-milk-colored residue, that’s a serious sign of a bad head gasket. This happens when coolant and oil mix together, creating a contaminated sludge inside the engine. Oil and coolant are not meant to share the same space. When they mix, the contaminated oil loses its lubrication properties and can damage engine components rapidly. This is one of the head gasket issues you simply cannot afford to delay addressing. You can also learn more about what it means when your car is leaking oil to better understand oil-related warning signs. Bubbling in the Coolant Reservoir or Radiator Combustion gases in the coolant system point to a serious head gasket leak. When the gasket fails, exhaust gases can push through and enter the cooling system, causing the coolant to bubble as if it’s boiling – even when the engine hasn’t reached full operating temperature. You might notice this in the coolant reservoir or radiator cap area. It’s a tell-tale sign that gases in the coolant are present and that the seal between the engine block and combustion chamber has been compromised. Poor Engine Performance A blown head gasket can cause a noticeable drop in power. When the gasket fails, it can affect cylinder compression, which means the fuel and air mixture isn’t being burned efficiently. You might feel rough acceleration, misfires, or an overall sluggishness that wasn’t there before. Poor engine performance combined with any of the other signs mentioned here is a strong indicator that it’s time for a proper inspection. A check engine light that won’t go away is also worth investigating – here’s a helpful resource if you’re dealing with a check engine light that comes on and off. External Coolant or Oil Leak Sometimes a head gasket leak shows up on the outside of the engine. You might notice a coolant or oil stain along the block and head area, or smell something sweet near the engine bay. An external coolant or oil leak doesn’t always mean a fully blown gasket – it could be a minor leak – but it still needs attention before it becomes something worse. A minor leak left unaddressed will worsen with time, especially under the kind of heat cycles a typical engine goes through. A coolant smell in your car is also worth checking out – you can read more about a coolant smell in the car when the heater is on for more context. How Mechanics Confirm a Blown Head Gasket To confirm a blown head gasket, a trained technician will perform several diagnostic checks. These typically include a compression test to identify cylinder pressure loss, a chemical block test to detect exhaust gases in the coolant, and a careful visual inspection for oil passages that have been breached. Head gasket failure isn’t always obvious at first glance. That’s why professional diagnostics matter – guessing can lead to unnecessary repairs, while a proper diagnosis gets it right the first time. How to Prevent a Blown Head Gasket The best way to prevent a blown head gasket is to stay on top of your cooling system maintenance. Keeping coolant at the proper level, using the

Car Makes Noise When Accelerating? Common Causes and How to Fix Them You press the gas pedal, and something just sounds off. Maybe it is a whine, a rattle, or something that sounds like grinding. Whatever it is, your car is making noises it definitely should not be making, and that is your vehicle’s way of asking for attention. The good news is that most noises while accelerating come from a handful of known issues. Understanding the type of noise and when it happens can help you get to the root of the problem faster. Why Your Car Makes Noise When Accelerating Vehicles are complex machines with hundreds of moving parts. When one of those parts starts to wear down or fail, noise is often the first symptom. Noise during acceleration tends to stand out because that is when your engine, transmission, axle, and exhaust system are all working hardest. The key is not to ignore it. A sound that starts small can quickly turn into a much bigger repair bill if left alone. Common Causes of Noises During Acceleration Exhaust System Issues One of the most common causes of a loud noise while you accelerate is a problem with the exhaust system. An exhaust leak can create a hissing or popping sound that gets louder as your engine works harder. This happens when exhaust gases escape through a crack or hole before reaching the muffler. You might also notice a rattling noise if the heat shield has come loose. The heat shield sits near the exhaust pipe or muffler and can become loose over time from road vibration and wear and tear. It is worth having someone inspect the exhaust system if you hear a rattling or roaring sound that increases with speed. A damaged catalytic converter is another exhaust system issue to watch for. When the catalytic converter breaks down internally, it can create a loud exhaust system sound, almost like gravel shaking in a can. Engine Problems If you hear a ticking noise or a knocking noise coming from under the hood, your engine is likely trying to tell you something. A ticking noise is often tied to low oil pressure, worn-out fuel injectors, or components that are not getting enough lubrication. A knocking noise, especially during acceleration, often points to something more serious. It could mean your engine is using the wrong fuel, has carbon buildup, or has internal wear that needs a closer look. Getting professional engine repair services early can prevent a much larger problem from developing. Do not ignore engine noises. They rarely go away on their own. Transmission Noise Your transmission takes a lot of stress every time you accelerate. A whining noise during gear changes can signal low transmission fluid or a worn transmission component. Low transmission fluid reduces the system’s ability to stay lubricated and cool, which leads to friction and noise. A clunking sound when shifting gears is another sign of transmission trouble. If the noise increases as you gain speed, that is worth taking seriously. Catching transmission problems early through expert transmission repair and replacement can save you from a much more expensive fix later. CV Axle and Driveline Issues If you hear a clicking noise when accelerating while turning, the CV axle joints may be the culprit. CV (constant velocity) joints connect the axle to the wheel and allow for smooth power delivery. When they wear out, they create that distinctive clicking or popping sound. A rumbling noise or rumbling that gets worse as you speed up can also point to a failing wheel bearing. These components keep your wheels spinning smoothly, and when they start to fail, they make their presence known quickly. For anything related to axle or driveline wear, comprehensive driveline repair solutions can get your vehicle back on track. Serpentine Belt and Accessory Noise A worn or loose serpentine belt can cause a squealing sound, particularly when you accelerate from a stop. The serpentine belt drives several key systems, including power steering and the alternator, so when it is stretched or cracked, it slips and makes noise. If the belt snaps entirely, you lose those systems immediately. It is one of those small parts with a big job, and replacing a serpentine belt before it fails is one of the simplest ways to avoid being stranded. Brake and Suspension Noise Sometimes the noise you hear is not coming from under the hood at all. A scraping noise or rubbing sound when you accelerate can come from a brake pad that is dragging against the rotor. Brakes that are worn or sticking can create friction even when you are not braking. Suspension components that are worn can also create a clunking sound when you hit a bump while accelerating. Getting your suspension and brake repair services checked sooner rather than later keeps your car safe and predictable on the road. Is It Safe to Drive With These Noises? That depends on what you are dealing with. A loose heat shield or a belt squeal might give you a little time, but a knocking engine or transmission grinding is a different story entirely. Unusual noises, especially during acceleration, are signs of wear that should not be ignored. When in doubt, stop driving and have a professional take a look. Pushing a car through a mechanical issue can turn a manageable repair into a much larger one. Using advanced vehicle computer diagnostics can quickly identify what is causing the noise, even if it is not immediately obvious. Simple Things to Check First Before heading to a repair shop, there are a few basic things worth checking on your own. Check your oil level and oil filter condition. Low oil is a common cause of a ticking noise. Look under the car for anything visibly loose or damaged near the exhaust pipe. Check your air filter. A clogged air filter can affect how your engine breathes and contribute to strange noise under load. Listen carefully to