When engine gets hot it idles rough

2000 JEEP CHEROKEE
310,000 MILES • 4.0L • 6 CYL • 4WD • AUTOMATIC
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GLORIA WERTZ
  • MEMBER
  • 2 POSTS
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?
Mar 17, 2021 at 6:26 AM
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DANNY L
  • CERTIFIED EXPERT
  • 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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Mar 18, 2021 at 12:47 AM