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Idle air control motor?

Tiny
BUICKREG
  • MEMBER
  • OLDSMOBILE
Hi, I have an 89' Olds Cutlass Supreme, 3.1 V-6 with 153,000 miles. I am experiencing difficult starting. Usually only when I first start the car in the morning is when the problem occurs. After a few tries it will start and then runs fine after that. I am wondering if this could be the IAC motor. I just cleaned out the throttle body, and the tip of the IAC motor. Should there be an 'play' in the shaft of the pintle on the IAC motor? I know not to push in or out on a used IAC motor, but as I was cleaning this gently I noticed some wiggle in the shaft. Thanks BW
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Wednesday, October 17th, 2007 AT 10:11 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the coolant temperature sensor-this is similar like a carb. Choke it provides the initial fuel enrichment during cold starts. Before the oxygen sensor takes over the fuel adjustment at closed loop.

IACV if its excessive change it and also look into the throttle position sensor test the closed and WOT voltages.
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Thursday, October 18th, 2007 AT 6:11 AM

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