Q: Q: Car stalls

asked by on

Speedometer goes up& down,cuts off at low idle after car reaches tempeture,no check engine codes...could the speed sensor cause this

My car has 130000 miles.
My car has an automatic transmission.

There are several reasons why this can happen and with limited information it can be difficult to narrow down the search. Some of the more common things that I have seen that can duplicate these symptoms are dirty throttle bodies, dirty/faulty idle air control motors, and vacuum leaks.

I would recommend enlisting the assistance of one of a certified technician. They will have the tools and experience needed to determine exactly why your vehicle is cutting off and experiencing a low idle. They will also be able to address the erratic speedometer. They can also assist you with making the repairs necessary to get your Impala running and idling smooth again.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Q: Car stalls

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: Engine turns off when I shit into drive

Hi Rosie. Thanks for contacting us today. The issue you are describing might be related to the alternator. The alternator is responsible for powering all mechanical and electrical systems on the vehicle after the engine has been started. So, if...

Q: Q: Car won't start

Check to see if the Theft Light is on or blinking while you are trying to start the vehicle. Try another key to see if the problem continues. If it does, then have the vehicle checked for fuel pressure and...

Q: Car doesn't want to stay running. Low engine power and "throttle disabled" keeps coming up on the screen.

Hi there. This is an indication of a faulty throttle position sensor. This is a sensor that monitors the position of your foot on the gas pedal relative to the throttle plate inside the throttle body. As you move...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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.