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

asked by on January 10, 2017

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

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

2009 Chevy Aveo engine light went on two weeks after the thermostat housing was replaced.

The check engine light can come on for any number of reasons besides the coolant level. It's kind of a Master Warning Light. When it comes on, it means that the computer has detected a fault somewhere and has stored...

My security light is on and my 2005 Chevy equinox will not start..what's going on

Check to see if your battery voltage is low, that is below 12.6 volts. If the battery is discharged or faulty, the immobilizer system might set. If battery voltage is normal and you suspect the immobilizer system is on, to...

I have replaced fuel pump 4 times in 3 years

The OEM pump, that is AC DelCo, might give longer service life. Pump life would be degraded if there is a poor ground connection or a voltage drop on the electric supply line to the pump and/or pump output restrictions...

Related articles

The Best Used Cars to Buy If You're a Personal Assistant
As As a personal assistant, you have a lot of demands placed on your time. Often it’s important that you be able to get around town quickly, running a ton of errands, picking things up here, dropping them off there,...
How to Get Chevrolet Dealership Certified
Chevrolet car dealerships offer automotive technician jobs to mechanics who are certified through the many training programs available.
2012 Toyota Prius vs. 2012 Chevrolet Volt: Which One Should I Buy?
While these two vehicles are both certainly cost-effective to drive, they can be difficult to compare due to the Prius’ entry in the mid-size category and the Volt living squarely in the compact car category. Both of these vehicles are...