Question about 2004 Oldsmobile Silhouette

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Idle high Even after engine is warmed up

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The idle is controlled by the computer you can not adjust it manually has to be done by a shop with a computer with year make and model specific software. Good luck

Posted on Aug 21, 2014

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Posted on Jan 02, 2017

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johndoe541

Diether Masing

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SOURCE: always in high idle even

may be some vacum leak.

Posted on Mar 14, 2011

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I have a 93 geo storm wit high idle when cranked an even while running fo to slow down again wit the idle high what do i do?


i cant understand that but got BAD idle.
there are different idle speeds, for hot ,warm and cold engine.
and the PCM (ECU) regulates idle with valve called ISC.
bad idle can be 1 of 2 things.
ISC sticking.
or engine runs so bad the ECU can NOT control idle.

clean the ISC, if not that
then its a big job, to find true cause. ASK !
one is finding air leaks.aka, vacuum leaks.

Jul 05, 2014 | 1993 Geo Storm

1 Answer

Starting car idle is very high


sounds like your air intake gasket is leaking. If you take ether, or brake cleaner and spray it where the air intake is bolted on, the idle will come down to normal. Is this problem existing even after the engine is warmed up, or just when you first start it up?

Apr 11, 2014 | 2001 Chrysler 300M

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High idle gmc 1988 s15 poor fuel economy no check engine light


Change the temperature control sensor to the front if the engine near radiator
1 start the truck let it run till you think it is at normal operating temperature
2 unplug the temp sensor if the idle changes then the sensor is bad

Feb 08, 2014 | 1988 GMC S-15

1 Answer

High idle benz 190e


Could be a defect in the ECU. But 1000rpm is not that high my cars normal is 1000rpm. but some older models were about 700rpm
The AC rise is normal. You may want to have a OBD II check by your garage or you can buy a unit to do this. It will scan the sensors fitted for any problems.

Jan 28, 2014 | Mercedes-Benz Cars & Trucks

1 Answer

High idle


Did you smoke test it to determine no vacuum leaks?

Dec 14, 2012 | 1993 Chevrolet S-10

1 Answer

4runner idle high when cold after warm up it idle 1200 rpm shot down engine after fuw min. restarting the engine the idle to low?


it seems that the auto choke setting is maybe wrong or there is a problem with engine management, or a worn part which is sticking.

when cold, the engine should be higher as the choke will be on but a warm up idle of 1200 seem a bit high i would expect around 800 and then on restart if the engine is warm then the choke should be off but the idle being too low indicates one of the above.

Nov 17, 2009 | 1995 Toyota 4Runner

1 Answer

Idle out of control.


check all your vacuum hoses and the throttle body itself for a vacuum leaks if the hoses replace as nessasary if to check for throttle body get can of carb cleaner and spray around base of throttle body and sides not in it if idle raises you have a vacuum leak goto a good parts store and ask for a rebuild kit don't goto auto zone or advance they don't carry them

Apr 22, 2009 | Chevrolet Sportvan Cars & Trucks

1 Answer

2000 ranger xlt supercab. idles high while driving


It sounds like you have a leak somewhere in your intake manifold. Have all hoses and seals checked. If the idle air control valve is malfunctioning it would cause the engine to idle high even after the engine is warmed up. Have it checked also.

Jan 10, 2009 | 2000 Ford Ranger SuperCab

2 Answers

Warm up


The high idle is caused by the choke and the high idle on the carb. It is working normal and you do won't to warm up this motor before going. When it is warm and you hit the gas it activates the choke pull off to bring the idle to normal. Your mechanic is used to fuel injection that will control the fuel/air mix according to temp. I still let my injected cars warm up so the oil can thin a little. If you jump on the highway with cold thick oil it can all wind up in the to of the motor.

May 16, 2008 | 1990 Chevrolet Camaro

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