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1988 Chevrolet C1500 Cheyenne 5.7L Excessive Emissions
Posted to GM Driveability on 1/18/2012 18 Replies

there it no grd signal to egr control valve and other related components at any time, off idle throttle, at hyway speed, in any gear.. other wise the truck runs fine nox is way too high dont know this system, can u point me in the right direction, i could even...

18 Replies Received (View Replies)

  Related Documents & Media  1988 Chevrolet C1500 Cheyenne

 
Message Closed w/FIX

car Vehicle Data

1988 Chevrolet C1500 Cheyenne

VIN 1GCDC14K8J
Engine5.7 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryFuel Injection / tbi
Emissionsca
SymptomsExcessive Emissions
OccursAlways
Misc.Tbi
Message Closed w/FIX

car Vehicle Data

1988 Chevrolet C1500 Cheyenne

VIN 1GCDC14K8J
Engine5.7 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryFuel Injection / tbi
Emissionsca
SymptomsExcessive Emissions
OccursAlways
Misc.Tbi