Q: Mercdes benz accelerates by itself

Several factors can cause a fast or slow engine idle. Running the air conditioning or defroster will speed up the idle speed of the engine. Components that impact the engine idle speed include the idle air control motor valve, air...

The passenger airbag off Warning Light is located on your instrument panel. This light illuminates when the vehicle has detected that the front passenger seat is unoccupied, or occupied by a small child. When the light is on, the front...

Unfortunately for you, you've had your transmission rebuilt twice at the same shop. So, obviously, they didn't do a good job the first time and I'd be kind of leery about it the second time. If I were you, I...

Hi there, thanks for writing in. In most situations when the variable valve timing solenoid (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-variable-valve-timing-vvt-solenoid) is damaged or causing an ignition problem, it will trigger an OBD-II code and thus illuminate the check engine light. If the warning light...

Hi there. What you're describing appears to be a major oiling and lubrication issue that is most likely causing your knocking and rattling noise. It's likely that the issue is in the cylinder heads, but due to the fact that...

Hello, It sounds like you may possibly have a stuck EGR valve (https://www.yourmechanic.com/services/exhaust-gas-recirculation-egr-valve-replacement). The EGR valve allows the flow of exhaust gases into the intake manifold in controlled amounts. When you start the motor, the valve remains in a closed...

Hi there. When an engine is overheating your would need to check the coolant to see if its low or not the correct temperature rating. If the coolant is good and rated to the maximum temperature, then the radiator could...

Hello. From the explanation that you are giving me it sounds like you have a catalytic converter that is failing. When this occurs it will give you these codes and will cause a loss of power. You should have this...