Skip the auto shop - Our mechanics make house calls

Q: Car is shaking violently

asked by on

The Service Engine light is flashing. The car shakes violently and slowly accelerates.

Hello there. Service Engine Light flashes is an indicator that there is a multiple cylinder misfire taking place. A misfire can easily cause poor acceleration and vehicle shakes. Common causes of misfires are faulty ignition modules, cracked manifolds, or aged spark plugs. If the misfire is bad enough or it is not addressed soon enough, it may damage the catalytic convertor. If you need further assistance, I recommend you have a mechanic, like one from YourMechanic, inspect the acceleration problem your vehicle has and replace any damaged parts.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Throttle position sensor - 1994 Ford F-150

Hello. The only thing to do is to verify that the TPS was installed in the correct position. Make sure you did not put the little blade on the throttle body behind instead of in front of the sensor blades....

Q: Loss of control over vehicle on a bumpy road

Hello. There are several things that could be causing this problem. The struts of the SUV could be weak or bad causing unstableness. The upper and lower control arms, ball joints, inner and outer tie rods may be worn out...

Q: Transmission problems

Hello. From what you describe it would appear that your transmission may be having some potentially serious issues. If the issues suddenly appeared after difficult shifting and a noise it could be possible that the transmission suffered some sort of...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...