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1991 Chevrolet C2500 Cheyenne 7.4L MIL Lamp on
Posted to GM Driveability on 5/3/2000

Hi fellow techs we inherited this problem from another shop The engine runs perfect until the check engine light comes on then the idle speeds up to 1,100 R.P.M.,scan for CODES none [...] Propane system has a LPG SPARK TIMING RECURVE COMPUTOR by AUTOTRONICS CO...

  Related Documents & Media  1991 Chevrolet C2500 Cheyenne

 
Message Closed w/FIX

car Vehicle Data

1991 Chevrolet C2500 Cheyenne

VIN 2GCGC29N2M
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / PROPANE
EmissionsUS FEDERAL EMISSIONS
SymptomsMIL Lamp On
OccursAfter a Hot Soak
Misc.Propane Fuel Only
Message Closed w/FIX

car Vehicle Data

1991 Chevrolet C2500 Cheyenne

VIN 2GCGC29N2M
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / PROPANE
EmissionsUS FEDERAL EMISSIONS
SymptomsMIL Lamp On
OccursAfter a Hot Soak
Misc.Propane Fuel Only