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?
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. 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: At what RPM should my car be at while idling. My car is a 2000 Mazda 626 automatic.

Hey there. The specifications for the idle speed in gear for a 2.0 liter engine is 500 to 800 rpm. If you have a 2.5 liter engine the specifications are 550 to 750 rpm. Both of these rpm specifications are...

Q: Car won't start the next day after getting gas, but was able to drive to work and back home.

Hi there. It sounds like there is junk in the fuel system from running the vehicle out of gas. I recommend putting in a fuel treatment in the fuel tank and letting it sit for about 1 hour. This will...

Q: EPS 2011 Acura TSX

The problem you are experiencing with your electronic power steering system sounds like the issue may have to do with a failing motor or another electronic component of the system. When problems arise, the system is turned off which reverts...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.