Skip the auto shop - Our mechanics make house calls

Q: After being driven for 20 minutes and parked for 1 hour, the car won't idle after restarting. What is a possible cause of this?

asked by on

See question

My car has 131000 miles.
My car has an automatic transmission.

If the vehicle drives fine when cold and starts showing issues after the engine warms up, there may be a problem with the idle air control system. Another possibility is a gasket that may seal fine when the car is cold, but a gap opens when it gets warm causing a vacuum leak.

Consider having the vehicle looked over by an experienced technician, such as one from YourMechanic, who can determine if you need an idle air control valve replacement or if something else is wrong.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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
  • Home
  • Questions
  • After being driven for 20 minutes and parked for 1 hour, the car won't idle after restarting. What is a possible cause of this?

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: Misfire in cylinder 6. GMC Sierra 1500.

Hey there. You need to have the engine compression tested to see if you have a leaking valve or rings. You could try to have the combustion chamber cleaned of carbon and see if the problem improves. This may be...

Q: I have a 1991 Legend. Check engine light is on. Tried pulling codes with paper clip in service connector. Light still solid,won't

Hi there, thanks for writing in about your 1991 Acura Legend. I would start by verifying that you are connecting the correct terminals and that you have continuity (i.e., the clip is actually contacting the terminals well). If so, and...

Q: ABS light comes on when I start driving - 1994 Acura Vigor

There is the possibility of a deeper electrical problem like a broken wire or corrosion inside a wire that may be very difficult to pick up on. Have an automotive technician experienced in diagnosing electical bugs dig out the problem....

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...