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High idle speeds with check engine light on - 2001 Saturn SL

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Get an obd code reader likely an o2 sensor or your TPS senor is bad. the reader will tell you which

Posted on Dec 29, 2010

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Good Day, my Corsa is got a high Idling and replaced all sensors on intake and throttle. Still Idling high and workshop light came on. What can the problem be. Please assist me - Thank you.


The cause of high idle are vacuum leaks or a bad or dirty Idle air control. Check pcv valve to see if its working properly. pinch off the hose that supplies the PCV valve. The engine speed should drop slightly. If the engine returns to a normal idle speed, the PCV valve should be replaced. The Idle air control regulates engine rpms.

May 14, 2016 | 2006 Opel Corsa Utility

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Rough idle-cutting out at higher speed


It could be the O2 sensor. Connect the diagnosis tool and check the codes to better understand the problem.

Apr 21, 2013 | 2000 Ford Taurus

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Idle too high and service engine light on, how do I adjust idle?


Don't listen to that other guy-there is no idle speed adjustment screw.If your idle speed is to high and you have a check engine light,you probably have a vaccum leak.Start it up and listen under the hood for a loud air-rushing sound.It's probably a broken rubber or plastic fitting,or maybe something just got disconnected by accident.

Sep 05, 2012 | Saturn Cars & Trucks

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The idle is sticking on park


High idle speed is usually caused by a sticking idle air control valve or a vac leak. The computer controls idle speed by how much air is allowed into the intake manifold.
is the check engine light on ?

Aug 26, 2012 | 1997 Chevrolet Tahoe

1 Answer

I have a 96 Chev. Beretta, and hard to start with sputtering and sneezing after misfire. and then will eventually start but very high idle speed.


If the check engine light is on I would check it for trouble codes first.
The high idle could be a vac leak or faulty idle air control valve.

Jul 27, 2012 | 1996 Chevrolet Beretta

3 Answers

Engine idle speed too fast some times. idle speed


Three things to check for:

1) High idle switch is on..*(vehicle thinks AC is running but it isn't.
You can try turning on the AC and see if the engine slows down to confirm this one.

2) Sticking or worn out Idle Air Control or IAC, You might get a check engine light with this one.....you might not if it's a mechanical failure.

3) Simplest of all. A vacuum leak. You can get the engine vacuum read while running if you go to a mechanic with a vacuum guage or an OBD 2 ecu code reader. There should be specs on what vacuum levels are normal for you car at idle.

Good luck and be careful!

Dec 29, 2009 | 1996 Isuzu Trooper

1 Answer

'98 S10 4 cyl. 5 speed: Sudden high idle, now surges.


Go to your local shucks or auto zone and they can check any codes behind your check engine light and it's free. It sounds like one of two things a O2 sensor or your mass airflow sensor but they will tell you for sure

Oct 02, 2009 | 1998 Chevrolet S-10 Pickup

1 Answer

High idle speed when the engine is cold


The high idle speed at start up is normal. As the engine temperature increases, the engine idle should kick down automatically. Insofar as the emissions results, if there were a problem, the check engine light should be on. If it is, take the car to an autoparts store and have the fault codes read. Most parts stores will perform the scan for free. If the check engine light is not on, and the idle question was all you were worried about, you are good to go! Hope this helped and best wishes.

Jul 31, 2009 | 2002 Toyota Camry

1 Answer

Too fast idle running speed.


Typical idle for this motor is right around the amount you have described. Check to see if any check engine lights are on, or if the ABS light is on. A typical issue with this motor is the OVP relay that when not operating properly causes the engine to rev much too high (~1500-2000). Also do your revs drop significantly when you put the car into gear? If not then there really isnt an issue. When the motor is idling too high and you stick it into gear the car will typically lurch really hard.

Jan 19, 2009 | 1986 Mercedes-Benz S-Class

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