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Jul 10, 2003 | 01:45 PM

travisca

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From: california

idle speed

At stops, my engine does not want to return to idle quickly (800 rpm).. Any suggestions? Thanks.....

Last edited by travisca; Jul 10, 2003 at 01:48 PM.

Jul 11, 2003 | 06:41 AM

Rockledge

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From: Connecticut

idle speed

Have you tried cleaning your IAC?

Jul 11, 2003 | 06:46 AM

Bob Ayers

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From: Durham, NC

idle speed

It could be your TPS (Throttle Position Sensor) also......

Jul 13, 2003 | 01:13 AM

ludis

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idle speed

It could also be programmed to have a brief high idle.

Jul 13, 2003 | 02:50 PM

wptski

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From: Warren, MI

idle speed

Quote:

Originally posted by travisca
At stops, my engine does not want to return to idle quickly (800 rpm).. Any suggestions? Thanks.....

travisca:

It's not supposed to drop to idle too quick, that's a anti-dashpot function of the IAC but it maybe be commanded by the PCM. Like someone suggested, clean your IAC and it wouldn't hurt to clean your throttle body too.

Jul 14, 2003 | 11:15 AM

travisca

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From: california

idle speed

What and where is IAC and a throttle position sensor??? Can the average "joe" clean, check and repair these problems?... If so, what do I do??? Thanks guys for the prompt reply???

Jul 14, 2003 | 12:29 PM

Rockledge

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From: Connecticut

idle speed

Quote:

Originally posted by travisca
What and where is IAC...

Your Idle Air Control Valve (IAC) allows a certain amount of air to bypass the closed throttle position in order to maintain proper idle speed. It is controlled by the PCM.

Read more on it here: Idle Air Control Valve

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Jul 14, 2003 | 12:47 PM

travisca

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Joined: Jun 2003

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From: california

idle speed

Bill, thanks, how do I clean the IAC and throttle body??? I appreciate ALL of the replies.... ..

Jul 14, 2003 | 05:27 PM

#10

Rockledge

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From: Connecticut

idle speed

You should pick up a Haynes Repair Manual for your truck, they come in handy for many small repairs and general maintenance.

You can get an idea about cleaning your throttle body by reading here: Cleaning Your Throttle Body

You clean your IAC by taking it off and spraying it with Throttle Body Cleaner, maybe get a can of compressed air to help blow out the crud.

You can check your TPS using these instructions: Throttle Position Sensor (TPS) Testing

Here is a picture of the TPS and IAC on a 4.0L: