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1988 Chevrolet C1500 Cheyenne 5.7L Poor Idle Quality
Posted to GM Driveability on 9/30/1998

After I replaced these parts the vehicle will start running high in gear. The TBI gasket is new as well as a IAC motor. When you idle in gear the IAC counts go up to 145 and the O2 gets around 100. The frames are like this:

1 2 3 4 5 6 O2 877 169 117 117 108...

  Related Documents & Media  1988 Chevrolet C1500 Cheyenne

 
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car Vehicle Data

1988 Chevrolet C1500 Cheyenne

VIN IGCDC14K6J
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI Injection
EmissionsOBD I
SymptomsPoor Idle Quality
OccursAlways
Message Closed w/FIX

car Vehicle Data

1988 Chevrolet C1500 Cheyenne

VIN IGCDC14K6J
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI Injection
EmissionsOBD I
SymptomsPoor Idle Quality
OccursAlways