IAC Trouble

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Aug 5, 2010 | 01:31 PM

357i

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From: Richmond, VA

IAC Trouble

Having odd idling issues now that my swap is up and runnning. The car wouldnt idle at all, after testing some things I replaced the IAC motor and ran a ground wire to the TB and it solved the problem... I thought. The car will idle fine all the way up to opertating tempature, no problem. If I cut the car off and re start it, it will not idle period. I can cut it off and start it over and over again and it wont idle. If I leave it alone for a couple hours to cool off, it starts up and idles fine untill I cut it off again.

This thing is driving me crazy.

Aug 7, 2010 | 10:54 PM

Wesmanw02

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The IAC valve is supposed to retract upon cycling the key, perhaps it is getting stuck or you have a wiring issue causing the pintle to not retract and keep the idle set too low.

Aug 7, 2010 | 11:10 PM

hotrod388

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From: Laffeyette

This may help try to reset the PCM for that sensor. Unplug the IAC and the TPS turn the key on for a few then back off. Plug the sensors back in and turn the key on it will reset It.