Showing articles & questions for topic
A4

Hello - a P0455 (https://www.yourmechanic.com/article/p0455-obd-ii-trouble-code-system-gross-leak-evaporative-emission-by-john-nelson) indicates a large evaporative emissions leak. This problem code originates with the evaporative emissions system purge valve, which expects positive pressure flow from the evap emissions cannister - which captures fumes from the fuel tank...

If there was oil splattered all over the bottom of the vehicle, there is a good chance that the smoke you are seeing may just be excess oil that is being burnt off of the hot motor and exhaust. To...

Sometimes its easy to get the hardware in a little crooked when changing brake pads, that or a backing plate might have gotten bent. Take the car back to the guy who did your brakes, they should be happy to...

Hi. Your vehicle can be leaking from numerous locations. I would start by performing a pressure test on the cooling system. This test uses a dedicated tool to pressurize the cooling system and pinpoint the leak. To address the oil...

You need to determine if the release handle is pulling the release cable. If it isn't, the hood release will not move. It could also be the hood latch itself, but not likely. With someone pulling the release handle, try...

Hi Jessica. Thanks for contacting us today. With turbo-charged four-cylinder engines, diagnosing a starting issue can be more complex than the traditional "getting fuel / getting spark" process. In some case, a faulty or worn out wastegate or other turbo...

If your car will not hold coolant, you will need to solve that before anything else. I'm not clear about the other issues, but it seems the coolant leak is the central problem. It may be a simple as a...

If you had a mechanic replace the CV axle, I would suggest getting the mechanic to recheck the work so that we can rule that out. Mechanics are human and make mistakes too! We sometimes forget to tighten a nut...

The fans on your car work together together and get the power and control from the fan module on top of the radiator. If one fan is working but not the other then that fan motor would need to be...

It is not clear from your description if the noise you are hearing is primarily engine versus chassis (suspension, etc.) related. The origin of the noise can be pinpointed though if you request a vehicle noise diagnostic (https://www.yourmechanic.com/services/car-is-making-a-noise-inspection). That the...

Hello. I would say care cost of a European built vehicle versus an Asian built vehicle is about 20 - 30%. The Asian manufactured parts can be cheaper because they are generally more mass-produced but the European Parts can be...

Hi there: The symptoms you're describing are similar in many ways to restriction of hydraulic fluid inside the transmission. Sometimes flushing the transmission fluid can help remove those obstructions; but in most cases, it delays the inevitable task of removing...

This may be a sign of a faulty MAP sensor. The Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is proportional to the amount of vacuum in the intake manifold. The engine computer then uses...

This may be a sign of a dirty or failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected...

It sounds like you may need an ignition control module. It's a small device mounted around the right front of the engine compartment. It has a plug with about a dozen wires connected. The module has a separate channel for...

The symptoms you have described have quite a few different causes (https://www.yourmechanic.com/article/what-causes-a-car-to-stall). Common causes of this could be the MAF sensor, torque converter locked up, fuel pump failing, ignition switch, or fuel injector failure. Not all of these will trigger...

You could have several issues going on there. I would start by having a mechanic, such as one from YourMechanic, check out the recent work. It is possible for the CV axle nut to have come loose. The noises while...

Vibration at idle is due to either failed motor/transmission mounts or an engine operating condition that causes a rough idle. If you are getting vibration through the steering wheel at speed, the most common cause is a wheel/tire imbalance although...

Your traction control and anti-lock braking system work together to control the car in adverse conditions such as snowing conditions. The traction control system monitors the steering stability of the vehicle and engages when loss of traction has been detected....

The coolant level should be checked when the engine is cold. Typically you will check the level in the plastic recovery tank. If the level is low, or keeps dropping even after you top off the system, you might have...