HELP, Idle problem

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Jan 29, 2006 | 02:31 PM

racer959

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Instructor

Joined: Nov 2002

Posts: 216

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From: Matawan NJ

HELP, Idle problem

When I come to a stop, the idle stays a little above 2000 rpm for about 10 seconds and then comes down, can someone help me, thanks (02 Z06 head & cam package 510HP)

Jan 29, 2006 | 02:38 PM

dpd

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From: bloomfield nj

sounds like your tune is off.i'm assuming you had it tuned anyway.but what you are describing it sounds like your tune[idle circuit] is off.

Jan 29, 2006 | 02:57 PM

racer959

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Instructor

Joined: Nov 2002

Posts: 216

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From: Matawan NJ

Thanks, is there some kind of idle control sensor that would cause this

Jan 29, 2006 | 03:00 PM

dpd

Drifting

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From: bloomfield nj

Quote:

Originally Posted by racer959

Thanks, is there some kind of idle control sensor that would cause this

no sensor,some of the parameters between the tac/pcm modules need to get tweaked.DO NOT LET anyone drill a hole in the throttle blade.it can be done by tweaking some of the parameters,it takes some time,but can be done.

Jan 29, 2006 | 07:36 PM

VetteTech81

Le Mans Master

Joined: Nov 2002

Posts: 7,179

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From: Charlotte, NC

Is this a new problem?

Or has it been this way right after the heads and cam?

Or did you install anything recently before this problem showed up?

-=Rick

Jan 29, 2006 | 07:37 PM

VetteTech81

Le Mans Master

Joined: Nov 2002

Posts: 7,179

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From: Charlotte, NC

Quote:

Originally Posted by dpd

Yes def. DO NOT drill a hole in the throttle plate, but with his problem of the car idling HIGH, it would make it worse as more air would flow past the throttle body at idle.
-=Rick

Jan 29, 2006 | 07:49 PM

Patches

Team Owner

Joined: Sep 2001

Posts: 23,283

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From: Lake Elsinore, CA

I knocked my Idle Airflow and Idle Airflow Parked values down between ~8-68 deg. C to eliminate that cruise control effect.

Jan 30, 2006 | 08:28 PM

racer959

Thread Starter

Instructor

Joined: Nov 2002

Posts: 216

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From: Matawan NJ

Heads and cam were done in 02, this is a new problem, did not add anything else since then

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Jan 30, 2006 | 08:39 PM

dpd

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From: bloomfield nj

is the throttle housing gunked up[blade sticking]? but from what you are describing it almost sounds like a bad tune.could be a slight air leak after the maf and before the throttle but i would think you would throw a lean/maf type fault.another possibility would be a pcv valve sticking,but you should also be sucking oil out of the motor

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