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1998 Chevrolet K1500 Cheyenne 5.7L Poor Idle Quality
Posted to GM Driveability on 10/20/2005 11 Replies

Vehicle from another shop, engine has high idle(2000rpm) most of the time, key cycle or cold sit may idle ok for 5min after driving sticks in high again. Iac was aftermarket we replaced unit with a delco same problem. votage test to and from pcm appear to be o...

11 Replies Received (View Replies)

  Related Documents & Media  1998 Chevrolet K1500 Cheyenne

 
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet K1500 Cheyenne

VIN 2GCEK19R5W
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursAlways, Idle, Intermittently
Misc.Ext Cab 4WD

Trouble Codes

P0101Mass Airflow Sensor Range/Performance
P1336Crankshaft Speed Fluctuation Sensor Circuit Malfunction
P1509Idle Speed Control System High RPM
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet K1500 Cheyenne

VIN 2GCEK19R5W
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursAlways, Idle, Intermittently
Misc.Ext Cab 4WD

Trouble Codes

P0101Mass Airflow Sensor Range/Performance
P1336Crankshaft Speed Fluctuation Sensor Circuit Malfunction
P1509Idle Speed Control System High RPM