Rough idle and code P0102

1996 CHEVROLET LUMINA
180,000 MILES • 3.1L • V6 • FWD • AUTOMATIC
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JACK D MONASMITH
  • MEMBER
  • 4 POSTS
Rough idle after it starts. Changed thermostat due to overheating issues. Removed throttle body for access to housing. Throwing P0102 code. Changed MAF. Sensor. code did not clear. Changed throttle position switch and ICM. still idles rough.
Aug 16, 2016 at 9:02 AM
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DANNY L
  • CERTIFIED EXPERT
  • 5,648 POSTS
Hello, I'm Danny.

Sounds like you might be having an issue with the idle air control valve. Here is a tutorial showing how to replace the IAC valve:

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

I've attached picture steps below showing the location and replacement of the idle air control valve on your car. Hope this helps and thanks for using 2CarPros.

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Jan 27, 2021 at 4:33 PM