Question about 1994 Chevrolet Cavalier

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Engine problem engine start in high idle then stop will not accelerate

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  • bengeerman Nov 05, 2008

    thank you i will have a look on the catalytic converter

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Check the catalytic converter.they wear out and clog the engine

Posted on Nov 04, 2008

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Cold choke baffle has 3/16 opening minute I pump accelerator choke thermostat closes primary baffle shut no air to start I force choke open to start why insufficient air to run at high idle?


Your engine probably has an automatic choke device that adjusts automatically with engine temperature. To set the choke when the engine is cold you have to depress the accelerator to the floor and release it completely. You shouldn't have to depress the accelerator again to start the engine, turn the key the engine should start. As the engine begins to warm up it will also begin to initially run faster then it will start to run rough. At this point you have to press the accelerator and release it again. The auto choke mechanism should allow the choke butterfly to open. There may be a number of stops in the system and the choke butterfly will stop again still not fully open and only become fully open when the engine is at operating temperature. Hope this answers you question, Rgs. Bob

Jun 21, 2015 | Cars & Trucks

1 Answer

91 buick lesabre chugging at idle and accelerating smooths out at speed


It can be issue with IAC( idle air control valve) causing the problem.


There are many other possibilities causing these idle issues. Engine idles rough.

There are few help links with solutions to troubleshoot such idle issues.

I suggest you refer the link below and follow its troubleshooting details:------

Click the link below:-----

Ford Expedition IAC valve replacing

http://technoanswers.blogspot.com/2012/12/ford-expedition-iac-valve-replacing.html

Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

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Stumbling and stalling at idle after engine rebuild?

http://schematicsdiagram.blogspot.in/2012/03/stumbling-and-stalling-at-idle-after.html

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1999 Ford F-150 Idles rough and quits when gas pedal is pressed less?

http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html

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Engine stumbles coming off idle when warm?

http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html

------------------

Erratic idle on car?

http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

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Cold start problem and vehicle shudder around 2500 to 3500 rpms

http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html

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Low idle when cold out side?

http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html

-----------

GMC Sonoma Stalls and idles low

http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html

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GMC Idle Air Control (IAC) Valve Replacing?

http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html

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1996 Camry intermittent engine failure while idle?

http://repairhelpcenter.blogspot.com/2011/10/1996-camry-intermittent-engine-failure.html

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Engine quits at idle?

http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html

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Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

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High Idle Problem

http://repairhelpcenter.blogspot.com/2012/10/high-idle-problem.html

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While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

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Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed?

http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html

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High rpm in neutral? Inconsistant high RPM in neutral?

http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html

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Vehicle stumbling at idle and shows code 54?

http://schematicsdiagram.blogspot.in/2012/03/vehicle-stumbling-at-idle-and-shows.html

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Rough idle, staling and Erratic shifting?

http://technoanswers.blogspot.in/2012/03/rough-idlestaling-and-erratic-shifting.html

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While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

---------

These details will help.

Thanks.

Feb 04, 2013 | Buick LeSabre Cars & Trucks

1 Answer

Car starts but won't idle until I accelerate


has base idle speed and kurb idle speed. allows engine to close throttle opening when shutting down to stop pre-ignition or engine running on

Nov 14, 2012 | 1988 Chevrolet Camaro

1 Answer

My 2002 explorer with v8 engine idles really high when i start it and it shifts really hard and my check engine light stays on sometimes it even idles really low when stopped also the lights dim and fan...


You may want to check for a broken vacume line it will cause a high acceleration. Also have the code extracted and see what it says let me know or post it it would be helpful in giving you a more precise diagnosis.

Mar 01, 2010 | 2002 Ford Explorer

1 Answer

I have a Chevrolet silverado 2000 V6, 4.3L The engine is start right away if i turn the key to start. At park (P) position or drive (D) position the engine try to stop if I press the paddle to accelerate,...


Does the engine accerlerate in neutral? Or does it die at higher speed in neutral??? If so you may have a plugged up exhaust system. Try disconnecting or loosneing up the flange before the catalic converter and then see if it runs normal.

Oct 26, 2009 | 2000 Chevrolet Silverado 1500

1 Answer

The car accelerates without being given any gas,engine is idling high Also, it periodically turns over and won't start.I had the transmission intake replaced 5 months ago.


sounds like a vacum leaks,listen for it youll hear a hiss,,,or a bad iac valve,idle air control,that will cause a hard start and high idle and running by itself,

Oct 09, 2009 | 2000 Hyundai Sonata

2 Answers

Loss of power on acceleration. Put new fuel


Probably the ignition timing is not advancing the spark on acceleration or high rpm's.

That is the job of the ECM (Electronic Control Module). Check it / Replace it.

Hope this helps!

Sep 17, 2009 | 2003 Chevrolet Impala

3 Answers

Accelerator sticks at start off - not cable problem - it was replaced and problem still exists. you have to push against the peddle quite hard to get going. Also revs when you stop at traffic-lights or...


The high-idle sensor often malfunctions on those cars. I would check that. If you have a carbureted model, then you have a vacuum actuated sensor on the firewall that sends a vacuum signal to the dashpot on the carburetor that raises the idle speed.

Sep 07, 2009 | 1993 Ford Festiva

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