Q: Car shakes violently when idle.

asked by on

Whenever I'm stopped my car has begun to shake until i press on the gas. The check engine light has also come on when the car stalled and all dashboard lights came one. After that the check engine light has stayed on.

My car has 78000 miles.
My car has an automatic transmission.

Shaking or vibration may be caused by many different 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. 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. Car shakes violently when idle.

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: Thermostat gauge drops suddenly while driving, the car seems to lose power then regains it but doesn't stall

From the description you have provided, this may be a combination of problems. The loss of power as you accelerate could be a fuel delivery concern, a low fuel pressure situation caused by a faulty fuel pump, a plugged fuel...

Q: Hello, when I make a sharp right turn, my car makes a whining noise. Could this be my ball joints or cv axle?

Hi Amber. Thanks for contacting us today. Usually a whining noise while turning is an indication of either worn wheel bearings or low power steering fluid. It is also possible that a steering suspension component might be loose or worn,...

Q: Replaced alternator, still not charging battery.

It sounds like you could have a faulty voltage regulator. When the voltage regulator is not working properly, this may result in the alternator not supplying enough power to the battery, resulting in undercharging the battery or not charging it...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...