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1991 Chevrolet C1500 Cheyenne 5.7L High Idle
Posted to GM Driveability on 6/8/2001 10 Replies

Vehicle starts and runs fine but idles at about 1400 r.p.m's in closed loop. The I.A.C. counts are 39 while the idle is high. If the vehicle is put in gear( drive or reverse ), the idle will gradually come down to 700 r.p.m's. The I.A.C. counts come down when ...

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  Related Documents & Media  1991 Chevrolet C1500 Cheyenne

 
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car Vehicle Data

1991 Chevrolet C1500 Cheyenne

VIN 1GCDC14K3M
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / T.B.I.
EmissionsCA Emissions
SymptomsHigh Idle
OccursHot, Idle
Message Closed w/FIX

car Vehicle Data

1991 Chevrolet C1500 Cheyenne

VIN 1GCDC14K3M
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / T.B.I.
EmissionsCA Emissions
SymptomsHigh Idle
OccursHot, Idle