Idle problem

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Jan 26, 2003 | 09:59 AM

max929

Thread Starter

Registered User

Joined: Aug 2002

Posts: 250

From: Homestead, FL

Idle problem

Here is the problem.
Car idles at 750rpm and drops down to 400rpm then back up to 750rpm approx every 4 to 6 seconds.
I unplugged the Idle Control Motor and idle goes up to 1000rpm and barely drops to 900rpm. What do you think my problem is?

Jan 26, 2003 | 09:34 PM

Rodrigues

Registered User

Joined: Mar 2002

Posts: 1,842

From: Bloomfield Hills MI

I would go and have it scanned to see what your IAC is reading. It could be a bad IAC module

Jan 27, 2003 | 02:35 AM

SStupid

Registered User

Joined: Sep 2002

Posts: 198

From: Austin, TX

ICM

Remove your throttle body and clean both it and the ICM.

Jan 27, 2003 | 07:38 AM

shoebox

Registered User

Joined: Dec 1969

Posts: 27,725

From: Little Rock, AR

Re: ICM

Quote:

Originally posted by SStupid
Remove your throttle body and clean both it and the ICM.

I think you mean IAC, right?

The Ignition Coil Module would not have much to do with the throttle body.

Jan 27, 2003 | 08:24 AM

SStupid

Registered User

Joined: Sep 2002

Posts: 198

From: Austin, TX

Oh yeah

Dude! My bad. Yeah, I mean the IAC. All these damn acronyms! Thanks, Shoe.

Jan 27, 2003 | 09:23 AM

max929

Thread Starter

Registered User

Joined: Aug 2002

Posts: 250

From: Homestead, FL

Thanks guys.
Pulled the IAC off yesterday and it was pretty dirty and the gasket appeared to be cracked (not sure if that happened when IO took it apart). Should have it back together today.