A faint hum from the fuel tank for a few seconds when you turn the key can be completely normal. The fuel pump has to pressurize the fuel system before the engine starts. What is not normal is a pump that suddenly becomes much louder, whines constantly, buzzes harshly, changes pitch while driving, or sounds like it is struggling. If you have been asking, Why Is My Car Fuel Pump Making Noise?, the answer usually comes down to a worn fuel pump, low fuel level, restricted fuel f

A vehicle that stays at a normal temperature around town but begins overheating at highway speed has a cooling-system problem that deserves attention. Highway driving normally provides plenty of airflow through the radiator, so rising engine temperature at 60 or 70 MPH can point toward a coolant circulation problem, restricted radiator, weak water pump, thermostat issue, low coolant level, or internal engine problem. If you have been asking, Why Is My Car Overheating On The H

A water pump should normally operate quietly in the background while circulating coolant through the engine. If you suddenly hear grinding, whining, squealing, rattling, or chirping from the front of the engine, the water pump or one of the nearby belt-driven components may be wearing out. If you have been asking, Why Is My Car Water Pump Making Noise?, the answer usually comes down to a worn water pump bearing, damaged pulley, loose belt, failing belt tensioner, coolant cont

A brake pedal should stay firm once you apply steady pressure. If the pedal feels normal at first but slowly moves toward the floor while you are stopped at a light or holding the brakes, something may be wrong with the hydraulic braking system. If you have been asking, Why Is My Car Brake Pedal Sinking At A Stop?, the answer usually comes down to an internal master cylinder leak, external brake fluid leak, air in the hydraulic system, ABS hydraulic problems, or another issue

It is normal for brakes and wheels to become somewhat warm after driving, especially after repeated stops or driving through hills. What is not normal is one wheel becoming dramatically hotter than the others, producing a burning smell, smoking, or feeling like excessive heat is radiating from that corner of the vehicle. If you have been asking, Why Is My Car Wheel Hot After Driving?, the answer usually comes down to a sticking brake caliper, seized caliper slide pin, restric

Your vehicle’s AC compressor does not necessarily run continuously. In many systems, it cycles on and off to control refrigerant pressure, evaporator temperature, and cabin comfort. Some cycling is completely normal. The problem is when the compressor switches on and off every few seconds, the air temperature keeps changing, or the AC never stays engaged long enough to cool the vehicle properly. If you have been asking, Why Is My Car AC Compressor Cycling On And Off?, the ans

A vehicle should feel stable and predictable at highway speed. You should not have to constantly move the steering wheel left and right just to stay centered in your lane. If your car feels like it drifts, floats, follows grooves in the pavement, or changes direction more easily than it used to, something may be affecting the tires, alignment, steering, or suspension. If you have been asking, Why Is My Car Wandering On The Highway?, the answer usually comes down to incorrect

A vehicle should normally sit fairly level from side to side when parked on a flat surface. If one corner suddenly looks lower, one wheel seems tucked farther into the fender, or the entire vehicle leans noticeably to one side, something in the suspension may be worn, damaged, or no longer supporting the vehicle correctly. If you have been asking, Why Is My Car Sitting Lower On One Side?, the answer usually comes down to a broken or sagging spring, failed air suspension compo

A vehicle that starts normally one day and has a dead battery the next morning can quickly become frustrating. You may jump-start it, drive around for a while, assume the battery is recharged, and then find the same problem waiting for you again the following day. If you have been asking, Why Is My Car Battery Draining Overnight?, the answer usually comes down to a weak battery, parasitic electrical draw, charging-system problem, interior light staying on, failing module, aft

Your brake pedal should feel firm, controlled, and reasonably easy to press. If the pedal suddenly feels unusually hard, requires much more force than normal, or feels like the brakes are no longer getting enough assistance, there may be a problem with the brake booster, vacuum supply, hydraulic system, or another part of the braking system. If you have been asking, Why Is My Car Brake Pedal Hard To Press?, the answer usually comes down to loss of brake booster assist, a vacu

A noticeable clunk when shifting into Reverse can make it feel like something inside the transmission or drivetrain is being hit into place. You may feel a bump through the seat or floor, hear a metallic knock underneath the vehicle, or notice that the drivetrain moves sharply when Reverse engages. If you have been asking, Why Is My Car Making A Clunk When Shifting Into Reverse?, the answer usually comes down to worn engine or transmission mounts, excessive drivetrain play, w

A vehicle that starts normally most of the time but suddenly struggles or refuses to start after filling the fuel tank can be confusing. You may finish pumping gas, get back in, turn the key, and notice extended cranking, stumbling, rough idle, or an engine that will not start until several attempts later. If you have been asking, Why Is My Car Not Starting After Getting Gas?, the answer usually comes down to a faulty EVAP purge valve, fuel vapor problem, flooding condition,

A leaking sunroof can turn a small rainstorm into a soaked headliner, wet carpet, fogged windows, and eventually electrical problems. You may notice water dripping from the overhead console, running down the A-pillars, collecting near the front seats, or appearing on the floor after heavy rain or a car wash. If you have been asking, Why Is My Car Leaking From The Sunroof?, the answer usually comes down to clogged sunroof drains, disconnected drain tubes, damaged weather seals

A brake pedal that pulses, vibrates, or pushes back against your foot while slowing down can be unsettling. You may feel it only during hard braking, only at highway speeds, or every time you press the pedal. Sometimes the steering wheel shakes at the same time. In other cases, the entire vehicle feels like it is surging slightly as the brakes are applied. If you have been asking, Why Is My Car Brake Pedal Pulsing?, the answer usually comes down to brake rotor thickness varia

A gas cap warning light can seem minor compared with a check engine light, but it usually means the vehicle has detected a problem with the sealed fuel vapor system. You may see a message such as “Check Fuel Cap,” “Tighten Gas Cap,” or a small fuel-cap symbol on the dashboard shortly after filling up. Sometimes the warning disappears after the cap is tightened. Other times it stays on because the problem is somewhere else in the EVAP system. If you have been asking, Why Is My

A car door should close securely with a normal push and stay latched without needing to be slammed repeatedly. If the door bounces back open, needs extra force, feels misaligned, rattles while driving, or will not latch at all, something in the door, latch, hinges, or body alignment may be worn or damaged. If you have been asking, Why Is My Car Door Not Closing Properly?, the answer usually comes down to a worn door latch, misaligned striker, sagging hinges, damaged weatherst

A small change in engine feel when the air conditioning turns on can be normal because the AC compressor adds load to the engine. What is not normal is a major loss of power, hesitation, sluggish acceleration, rough running, or a feeling that the vehicle suddenly becomes much harder to drive whenever the AC is operating. If you have been asking, Why Is My Car Losing Power When The AC Is On?, the answer usually comes down to excessive AC compressor drag, a weak engine, dirty t

Your cabin blower motor is supposed to move air through the vents without drawing attention to itself. If you suddenly hear squealing, rattling, clicking, scraping, buzzing, or a low humming sound whenever the fan is running, something inside the HVAC system may be worn, loose, or obstructed. If you have been asking, Why Is My Car Blower Motor Making Noise?, the answer usually comes down to debris inside the blower housing, a worn blower motor bearing, damaged blower wheel, l

A wheel alignment should help your vehicle track straight, keep the steering wheel centered, and prevent the tires from wearing unevenly. If the alignment seems correct right after service but the vehicle starts pulling again, the steering wheel moves off-center, or the tires begin wearing unevenly soon afterward, something may be causing the alignment angles to change. If you have been asking, Why Is My Car Alignment Not Holding?, the answer usually comes down to worn suspen

A clicking noise when you press the brake pedal can be easy to overlook at first, especially if the vehicle still stops normally. You may hear one click when braking, a repeated clicking sound as the wheels slow down, or a light metallic tap coming from one corner of the vehicle. Sometimes the noise only happens when changing direction between Drive and Reverse. If you have been asking, Why Is My Car Making A Clicking Noise When Braking?, the answer usually comes down to brak