2002 Idle fluctuating

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#11

04-03-2011 | 03:54 PM

mrl390

Monte Of The Month -- December 2009

Joined: Oct 2007

Posts: 3,604

From: Canonsburg, PA

Quote:

Originally Posted by Milhouse

Originally Posted by mrl390

What vehicle do you have?
Quote:
Originally Posted by N9QGS

My friend has a 2002 Monte Carlo SS, it has a erratic idle that is constantly going up and down, and she said occasionally the car will stall. There is a Check engine light code P0102, which indicates from my research:

DOH! when I clicked on the thread it took me to the post right above mine. I thought I was looking at the first post, lol.

#12

04-03-2011 | 04:09 PM

Justin Knight

Joined: Mar 2010

Posts: 520

From: Ontario

try cleaning the IAC motor its probably trying to centre itself and has a good layer of crud on it. take the MAF sensor out anyway for this and remove the little motor on the firewall side of the throttle body. i'm posting a pic in this post of the IAC motor. this time of the year its more likely to act up i'm not sure why but i've cleaned out 4 of these in the past 2 weeks on various gm's for the same problem.

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#13

04-03-2011 | 04:17 PM

ChibiBlackSheep

Monte Of The Month -- August 2014

Joined: Sep 2008

Posts: 25,137

From: Southeast PA

But it's throwing a MAF code, why would the IAC affect anything??

#14

04-03-2011 | 06:13 PM

Justin Knight

Joined: Mar 2010

Posts: 520

From: Ontario

MAF codes can be set from near stall conditions or a blocked TB. I know it's very deceptive but it can and does happen. That doesn't mean that the MAF isn't dirty also