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1991 Chevrolet K2500 Cheyenne 5.7L Excessive Emissions
Posted to GM Driveability on 5/3/2000

Hi guys! This one has been a problem for 2 days, and now it's your turn! (All readings are precat) At idle, the BLM drops to 102, with INT of about 113. The HC are 579 ppm, while CO is .56%. OK so far, high HC, normal CO. IN open loop, the BLM is 126, while th...

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car Vehicle Data

1991 Chevrolet K2500 Cheyenne

VIN 2GCFK29K8M
Engine5.7 L / 8 cyl / GAS
Trans4-speed Standard
DeliveryFI / TBI
EmissionsOBD1
SymptomsExcessive Emissions
OccursAlways
Message Closed w/FIX

car Vehicle Data

1991 Chevrolet K2500 Cheyenne

VIN 2GCFK29K8M
Engine5.7 L / 8 cyl / GAS
Trans4-speed Standard
DeliveryFI / TBI
EmissionsOBD1
SymptomsExcessive Emissions
OccursAlways