Q: Why is my car violently shaking and my check engine light and HOLD light are flashing?

asked by on

This literally came out of nowhere! Halfway home my car felt like it was driving funny then suddenly my check engine light and HOLD light started flashing.soon as I stopped at a red light the whole car started to violently shake but stops when I hit the accelerator

My car has 80000 miles.
My car has an automatic transmission.

Hi There, This can happen for many different reasons. The check engine light will come on when any of the following issues are detected by your vehicle’s computer. Shaking or vibration may be caused by things such as faulty spark plugs, poor fuel pressure or misfires. Other things such as a faulty idle air control valve may cause the engine idle to drop below the normal idling RPM which may also cause the motor to shake or vibrate more than normal. This creates a loss of power that resonates throughout the motor additionally causing other problems with ignition and fuel timing. Anytime a misfire is caused, this causes an imbalance in the motor which will cause the motor to shake or vibrate. The other issue that may cause this type of shaking or vibration is a broken engine mount. Engine mounts are generally rubber mounted braces that hold the engine in place to the chassis of the car. When these break or become weak or faulty, this may cause the engine to vibrate heavily. I would suggest having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Why is my car violently shaking and my check engine light and HOLD light are flashing?

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: my transmission is leaking in 2011 chevy aveo I just purchased

Have a certified technician look into the transmission fluid leak as soon as possible. A number of faults can cause the leak. Seals are certainly among them, Output shaft seals, front pump seal, etc, Even the transmission pan seal /...

Q: My car does not go past 40 kmph while driving

This is a common problem that can be caused by a clogged catalytic converter. If the converter is clogged or partially clogged, the exhaust gasses cannot escape the engine as fast as they should and this chokes the engine. Typically,...

Q: Poor acceleration and car jerking when going going on a mild/steep slope or carrying more people

Hi there, thanks for writing in. It sounds like you might be experiencing a problem with your clutch as opposed to the engine. Typically, around 130,000 miles, the clutch of a manual transmission will begin to develop problems engaging fully....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.