Popular questions

The fuel pump is commanded on by the ECM. If it runs all the time, then this is a fault with the computer rather than the fuel pump. Good power and ground connections should be verified at the ECM, but...

This is a very good question that I wish more people would ask. The reason why you change the filter at the same time you change the oil is due to the fact that the filter has a "lifespan" just...

Hello. This is not usually a common problem, however, it is possible and can happen for a variety of unforeseen reasons. Usually when a caliper sticks it is a result of a misaligned caliper or potentially a wheel bearing that...

Hey there. Oxygen sensors are located in the exhaust system, typically before and after the catalytic converter. Bank 1 is found on the driver's side - if the engine is a V6 or V8. On a 4 cylinder, it would...

This is just a guess, but the problem could be with the gear selector or the transmission position switch. The starter relay will not close and the vehicle will not crank, unless the switch is in the neutral or park...

It sounds like the brake booster is failing. The hissing sound you heard was air leaking through either a vacuum or vent valve in the brake booster itself. The valve failure prevents the booster from generating brake boost, making the...

Hi there. This sounds like you may have a blown head gasket. Combustion processes could be entering the cooling system via the gasket or worse, a crack in the cylinder head. This could be an involved process to accurately diagnose...

Hello. Volkswagen's dynamic curved lighting does not utilize an extra bulb despite all the confusion out there on the topic. The headlights physically swivel 5-15° allowing drivers to see up to 90% better around corners. VW uses servomotors controlled by...

Hi, thanks for writing in. This can happen for many reasons such as over torquing the plugs when tightening them, or previously stripped threads in the cylinder. In either case, the result is the plug will result in being blown...

Hi there. Your vehicle's wrench light, Check Engine Light and lack of performance go hand in hand. The vehicle's PCM (powertrain control module) has recognized a fault and put the vehicle into limp home mode. It could be, a throttle...

Hi and thanks for writing to YourMechanic. There are several things to look at. First off, have the coolant tested and make sure it is within spec. If coolant is not mixed at the correct ratio, it can cause the...

Depending on the symptoms of the vehicle, this may be a transmission problem or a failing axle. Unfortunately, without additional detail as to the specific model of your vehicle, it may be difficult to diagnose without physically inspecting the vehicle....

Hi there. There are a few sensors that can cause this as well as some mechanical issues in the transmission. Even though the Check Engine Light is not coming on I always start by checking the computer for any codes....

It is possible that you could be having an issue with your axle or with your engine. I would recommend having your vehicle inspected by a qualified professional to determine the exact cause of this issue before spending any more...

When it comes to frozen, rusted, corroded and seized parts, it will take time, a lot of heat and liquid wrench. From personal experience, I find PB blaster works better than liquid wrench. Try getting the part real hot with...

As long as the cost of replacing the spark plugs on the right side is equal to half of the cost of doing it on the total engine I think it will be ok. Considering that the cylinder head is...

Hello, thanks for writing in. Unfortunately, without additional detail as to the specific symptoms you are experiencing or any potential indication of warning lights, etc. This may be difficult to diagnose without physically inspecting the vehicle. I would recommend having...

Hi there. Check the glow plug relay and see if its plugged in. Check the circuits to the glow plugs and see if there is power to them when the key is turned on. The circuit to the glow plugs...

It sounds like your window switch may be faulty. If you hear the motor try to move the window when pressing down but no noise is heard when pressing up, its most likely the window switch. If you hear the...

Hello Jacqueline! Thank you for writing in with this question. This problem could be related to a bad gas cap o-ring, or something more involved like an evaporative emissions system leak, or canister purge solenoid problem. Since the Check Engine...

The correct way to prevent water from getting into the trunk is to have a body shop repair the vehicle. Short of that, about the only way to keep water out might be to cover the entire car with a...

Hello. If you have poor connections at the ignition coils then that will cause cylinder misfires. These loose connections can also shorten the life of the ignition coils. The connectors need to be replaced in order to ensure that there...

Hello. If the Check Engine Light is on, then the first thing I would do is retrieve the trouble codes. The Check Engine Light is likely related to your performance issues and retrieving the trouble codes may reveal some information...

Hello, diagnosing a noise is a hands on jab and must be heard firsthand for a proper recommendation. The noise could be coming from and item on the belt drive or possibly the engine itself. To pinpoint the cause of...