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Idling too fast

Idles too fast

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1988 Suburban with 5.7 TBI runs fine until warms up. Goes to fast idle and when it comes off fast idles won't start back until cools down.


Lets start at the beginning. Is the check engine light on ?
You have an idle air control valve which could be sticking open or shorted to ground. You should be able to unplug it to test. There also could be a gasket or hose that is opening up and causing a huge vac leak.

Aug 06, 2014 | 1988 Chevrolet K1500

1 Answer

2005 ford taurus doesn't idle down until warm when driving


you might have to have the programing checked and possiblly adjusted

Jan 18, 2014 | Ford Cars & Trucks

1 Answer

My 1994 samurai idles really high when I first crank it, but later slow down. is there anyting I can do to ?


From a cold start my sami idles really fast, but as I drive it and the engine warms up it will idle correctly. Is there a way to make it idle slower from a cold start?
what engine ? 1.3 L
carb or EFI? (94 was first year of efi, and many have been converted this old)
but the answer is the same , that is normal.
on car its a fast ilde cam on the carb.
in EFI its on the software and in the IAC thermal valve.

Mar 29, 2013 | 1994 Suzuki Samurai

1 Answer

1996 lincoln town car 4.6 fast idle in park and in drive idles to 10 mph


Did you check the airflow sensor? Clean it, maybe it will help

Mar 15, 2013 | Cars & Trucks

1 Answer

Engine idles fast at around 2k


Could be a vac leak, or something holding the throttle open.

Feb 28, 2013 | Cars & Trucks

1 Answer

1996 Eagle Vision 3.5 idles too fast. How to fix


yes propane or carb spray will work, just spray around the entire intake area and all vacuum hoses, if u hit a vacuum leak the engine idle will change.

Nov 25, 2009 | 1996 Eagle Vision

1 Answer

1979 cj replased carb idles tohigh


Even with a rebuilt carb you have to make the adjustments. Check the choke adjustment and set the fast idle. If choke is to tight it will be hard to start and take a long time to idle down. The fast idle sounds like it is high also.

Oct 01, 2009 | 1983 Jeep CJ7

1 Answer

Idles too fast. Back pressure in case. How do I fix this?


Clean out the blockage in the engine gas recirculation and or idle by pass.Sounds like a blockage or the idle bypass has failed

Feb 15, 2009 | 2001 BMW 325

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