When engine gets hot it idles rough

Tiny
GLORIA WERTZ
  • MEMBER
  • 2000 JEEP CHEROKEE
  • 4.0L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 310,000 MILES
Runs great but when motor gets hot it idles really rough. I have replaced the plugs and coil pack, but it is still doing it. Any idea of what to try next?
Wednesday, March 17th, 2021 AT 6:26 AM

1 Reply

Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

It sounds like you might be having an issue with the IAC - idle air control motor. Here are two tutorials for you to view relating to IAC motor cleaning and replacement:

https://www.2carpros.com/articles/idle-air-control-valve-service

https://www.2carpros.com/articles/how-to-replace-an-idle-speed-control-motor-iac

I've attached picture steps below showing how to replace the IAC on your vehicle. Hope this helps and thanks for using 2CarPros.
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Thursday, March 18th, 2021 AT 12:47 AM

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