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1990 Chevrolet C1500 Cheyenne 5.7L Excessive Emissions
Posted to GM Driveability on 11/29/2007 17 Replies

Hello all, I've hit a wall. This is what I've got, hold the throttle at 2000rpm, o2 volts go to .030 sometimes less. Scan data shows integrator at 128, block learn at 117, coolant temp 185f, CLOSED LOOP operation, 1.5ms injector pulse width (checked with lab s...

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car Vehicle Data

1990 Chevrolet C1500 Cheyenne

VIN 1GCDC14K2L
Engine5.7 L / 8 cyl / GAS
Trans5-speed Standard
DeliveryFI / TBI
EmissionsCalif. OBD-1
SymptomsExcessive Emissions
OccursAlways
Misc.Prom Id# 9481
Message Closed w/FIX

car Vehicle Data

1990 Chevrolet C1500 Cheyenne

VIN 1GCDC14K2L
Engine5.7 L / 8 cyl / GAS
Trans5-speed Standard
DeliveryFI / TBI
EmissionsCalif. OBD-1
SymptomsExcessive Emissions
OccursAlways
Misc.Prom Id# 9481