Question about 2001 Chevrolet Silverado 2500HD

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Engine racing even when parked at red light! Goes

Engine racing even when parked at red light! Goes over 3000 RPMs~?!

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kevingsuzuki

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  • Chevrolet Master
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Check ur idle air control valve(iacv) or purge valve both affect idleing

Posted on Mar 15, 2010

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Driving along makes a very loud noise like motor is racing, but continue driving, noise goes away then starts again???


Please take a look at your Engine's RPMs when this is happening and let us know, as it will help with the diagnosis. If the Engine RPM is stable (not high during the periods of the racing engine sound), then it sounds like your Radiator Fan clutch may be going out. The noise you are hearing is the fan kicking in and blowing a lot of air, which in turn sounds like the engine is racing.

If the RPMs are increasing with the racing engine sound, it could be the transmission/(clutch if manual trans) slipping.
Hope this helps!

Jun 28, 2015 | 1993 Mercedes-Benz 190

1 Answer

Reving at 3000 rpms when in park


Check your idle control valve.

Jan 24, 2014 | 2002 Ford Explorer

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Throttle sticks somethimes in park or at a red light or stop sign. Engine races between 2-3 rpms without touching the gas pedal.


You need to take the breather tube off of the throttle body and clean the throttle body and the throttle plate with carburator cleaner to remove the gumm that is causing it to stick.Be sure to do the top and bottom of the throttle borewith a clean ragg. It's all gummed up from the Ethanol Fuel that you can't but help put in it. Ethanol Fuel is bad for todays cars!!!

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Took the Van in for inspection and it failed. Had


Check all vacuum sources for a leak. I wouldn't race engine over 3000 without a load on it.

Mar 15, 2010 | Pontiac Montana Cars & Trucks

1 Answer

When I first start engine, it stumbles until it warms up. Once driving it, it races when put back in park. You have to hit the gas to make rpms come back down.


i think myne had the same problem there is a hose that goes into something behind the engine block make sure its on there tight and mabey clamp it into place. hope this helps

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1 Answer

The engine light


3000 rpm? This is pretty high for idle. You need to have the stored code read from the ECM. Usually this is a simple O2 sensor but with it racing to 3000 rpm I would have this diagnosed by a tech at a shop.

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I have a 2003 Lincoln LS and it wont go over 3000 rpms


this car has a limiter on it so the engine wont go over 3000 rpms in park or neutral

Apr 19, 2009 | 2003 Lincoln LS

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98 SaturnSL1 engin races in park and neutral engin lights on& off


Check your coils. Make sure that they are working properly.

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Engine surging high rpms at stop signs/lights...


the idle air control solenoid or a vacuum leak on backside of intake the hose that goes to pcv valve.they are both common problems on this car.check for vacuum leak firstthanks for your question....

Feb 04, 2009 | 2000 Ford Focus

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