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My 1985 z idles high when i start it

The car idles high when car is at running temp the rpms are 2500 and more is it the computer i change the AIC VALE

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  • Cars & Trucks Master
  • 14,036 Answers

Take vechicle to dealership or garage let them reset adjust correct idle speed and relearn it to the ecm so car will idle right.

Posted on Feb 13, 2012

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Posted on Jan 02, 2017

fastboyz
  • 674 Answers

SOURCE: high idle

sounds like you have a vacume leak

Posted on Sep 11, 2008

  • 1 Answer

SOURCE: high idle 2500-3000 rpms

you can turn your idle down. i have the same car and it was doing the same thing. i had someone adjust it and it hasnt had a high idle since

Posted on Jan 28, 2009

  • 1 Answer

SOURCE: 1990 Toyota Celica GTS. Idle races too high

sound very much like a vacuum leak.... also maybe your timing is off? possibly advanced? try retarding it with the distributor if thats the case...

Posted on Feb 01, 2009

  • 740 Answers

SOURCE: 2002 saturn sl1 idle too high

Can be but also check and make sure there are NO vacuum leaks or broken vacuum hoses anywhere on intake. I would also suggest if engine light is on is to take this vehicle to an AUTO ZONE they will check by computer for this problem and let you know for FREE. When you get the code I would be more than glad to help you further. Don't guess you may be wasting money and time. Good luck and thanks for using FIX YA

Posted on Feb 01, 2009

daves944
  • 1050 Answers

SOURCE: high idle at start then oscilates after warm

It is a vacuum leak for sure, but where? Try buying a can of aerosol carb cleaner with a straw and spraying it in different areas and listening for a change. Also, a mechanics stethoscope with just the tube is great for pin pointing vacuum noises. Without any hesitation, I would put a new PCV valve in just because this has caught me on Hondas so many times and they are dirt cheap.

Posted on Mar 11, 2009

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1 Answer

98 eclipse 2.0 idles high at 2500 rpms an I just replaced the throttle positioning sensor


sounds like you may have a vacuum leak. any air entering engine not passing through the throttle body will cause engine to race. a whistling sound is sometimes a sign of vacuum leak but not always audible. propane is the recommended method finding leak but I find this unreliable. spraying carb cleaner around suspect areas and listening for a rpm change is more successful. just remember carb cleaner is extremely flammable and caution must be used.

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Sounds like either a vacuum leak, a TPS throttle position sensor, an AIC air idle control valve, or worst case scenerio, an intake manifold gasket. Try spraying brake cleaner directly onto intake manifold at the gasket. If idle lowers, that is the problem. Also spray all visible vacuum hoses and listen for idle drop. Listen for air hissing as well. Good luck let me know if these are good tips

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In cold weather thecar starts`ok but the rpms go to 2000 and slowly returns to around 1200 and stays there


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My 1998 saturn sl series idles to high even after 100 mile drive


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My car idles really high and drives on its own up to 40 miles an hour. I changed the tps; the spark plugs; the valve gasket cover cause oil leaked out into spark plugs and new plug wires changed the fuse...


Sounds like the AIC...Air Idle Control is stuck...usually located on the plenum just past the air intake hose/line...you can try cleaning the AIC before replacing it...Hope this helps.

Feb 21, 2011 | Chevrolet Cavalier Cars & Trucks

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Running roug at low idle, smooths out at 2500 rpms


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1 Answer

High idle 2500-3000 rpms


you can turn your idle down. i have the same car and it was doing the same thing. i had someone adjust it and it hasnt had a high idle since

Jan 21, 2009 | 1988 Ford Bronco II

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