Skip the auto shop - Our mechanics make house calls

Q: Engine vibration

asked by on

I recently replaced the 4 ignition coils and since doing so the engine is vibrating a little.

My car has 122000 miles.
My car has an automatic transmission.

A: Hello, thanks for writing in about your Vol...

Hello, thanks for writing in about your Volkswagen Passat. You should scan the engine computer to see if you are getting a misfire code for one of the cylinders. From what you've described you may have a defective coil or fouled spark plug. You should also note any oil in the spark plug holes indicating a valve cover leak as this will also cause a misfire. If you're unable to pinpoint the issue, have the engine vibration diagnosed at your home or office by one of our mobile technicians.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Interior lights sunroof windows

Hello there, it is not uncommon for a vehicle to have a few electrical issues as they start to get older. Although the amount of issues seen here is a bit abnormal for your 2006 Jaguar Vanden Plas. The most...

Q: Engine light on. when accelerate leak a power sometimes. When press a accelerator pedal, sometimes have a noise sound like a snore

Hi there. I would need to know what year your VW is to be able to help you more in depth on this. From what you are explaining it sounds like you may have an injector that is failing or...

Q: RPM drops while driving

Hi. The next step to take is check the engine for vacuum leaks and check for any loose or broken hoes. I would also check the pcv valve and check the level of the transmission fluid. The transmission could also...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.