Can you help me to locate the Idle Air Control Valve and advise the best way to clean it. Thank you.
Jan 13, 2009 at 3:24 PM
2003 Pontiac Grand Prix IAC Valve Location & cleaning
2003 PONTIAC GRAND PRIX
ANDYEIT
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May I ask, what makes you think, the iac is the problem? A code won't tell you the problem, just the general area, supposedly.
The iac should be located on the throttle body, four wire connector. As far as cleaning, I don't think your supposed to do anything except wipe off the pintle. When you reinstall the valve, the pintle should not stick out more than 1 1/8 inch from the base, a little less is better. You can usually work it in with thumb pressure.
If that is the problem, you may need to clean the iac passages in the throttle-body, so, you may need to remove the throttle-body.
The iac should be located on the throttle body, four wire connector. As far as cleaning, I don't think your supposed to do anything except wipe off the pintle. When you reinstall the valve, the pintle should not stick out more than 1 1/8 inch from the base, a little less is better. You can usually work it in with thumb pressure.
If that is the problem, you may need to clean the iac passages in the throttle-body, so, you may need to remove the throttle-body.
Jan 13, 2009 at 4:20 PM