2200rpm at start, park and in neutral

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Dec 28, 2014 | 05:16 PM

marcnet450

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2200rpm at start, park and in neutral

1995 Chevy Blazer vortex v-6 4.3l
Throttle valve is completely closed! Help.

Last edited by marcnet450; Dec 28, 2014 at 05:19 PM. Reason: Vehicle description added

Dec 28, 2014 | 06:21 PM

marcnet450

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*Is it possible by clearing the codes (unplugging battery) that the idle be reset to normal? At least temporarily? It's constantly at 2200rpm and the throttle valve is shut tight! ???

Last edited by marcnet450; Dec 28, 2014 at 09:41 PM.

Dec 28, 2014 | 10:04 PM

hubert hefner

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From: Rochester, Indiana

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Have you checked it for codes? If so post them up so we can help you better.

It is possible for the TPS to cause this symptom.

Dec 29, 2014 | 06:01 PM

Gregg64

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Joined: Apr 2012

Posts: 217

If you have codes you need to tell us what they are. There are a couple of things besides the TPS that can cause this.

Jan 8, 2015 | 04:40 AM

marcnet450

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Found the problem guys! Some people, I have read (having the same symptoms), have changed the EGR, PCV, ICU, TPS, have done scans. . . spent tons of money before checking for an intake manifold leak. Yes, squirting a bottle of water around the intake revealed a leaky Plenum gasket just below the TPS. Now, to tackle that job.