Q: Car idling rough

asked by on January 26, 2016

The car is idling rough. It shakes really bad, sputters, and then shuts off.

A rough idle indicates that your engine is misfiring. There are many reasons why a car would misfire. It could be a bad ignition coil or spark plug. It could also be a bad control module or wiring issue. If any of these problems got bad enough it is possible that eventually the car would shut off. I would have a qualified technician inspect your vehicle’s components and diagnose your car’s rough idle.

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

Is my alternator bad or my cables?

Hello. If the vehicle is only working when the charger is installed then there is high resistance in the vehicles electrical system. Most of the time it is caused by a bad positive battery cable. I usually do a voltage...

Emission issue causing car to run poorly.

Hello. If the engine in your car is not running properly then that will typically cause it to fail an emissions test. If the check engine light is on then you should have the computer scanned for codes to see...

Popping noise when accelerating

Hi. The noise will have to be inspected to initiate a diagnosis of what the problem might be. If the noise only occurs when the body of the vehicle shifts its weight, then it is either the suspension, body mount,...

Related articles

Symptoms of a Bad or Failing Cruise Control Cable
If your accelerator pedal gets stuck or cruise control stops functioning, you may need to replace the cruise control cable.
A Buyer’s Guide to the 2007 Ford Crown Victoria
This This enduring Ford classic enjoyed a nearly two-decade run before being discontinued from the retail market with the 2007 model-year being the last. Ever-popular with law enforcement (for whom models continued in production through 2011), and senior citizens, the...
How Does an Engine Idle High and Low?
A common problem that car owners experience is high or low engine idle. A damaged intake gasket, cold air intake, or PCV valve can cause idle issues.