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1989 Chevrolet C3500 Cheyenne 7.4L Excessive Emissions, Cuts out, MIL Lamp on
Posted to GM Driveability on 8/30/2013 13 Replies

the truck seats at idle and runs lean according to the o2 sensor. check engine light comes on.

running at 2500 hundred it runs like its cutting out. the injectors both have a cutting out reaction. (pretty sure thats a effect not a cause.

13 Replies Received (View Replies)

  Related Documents & Media  1989 Chevrolet C3500 Cheyenne

 
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car Vehicle Data

1989 Chevrolet C3500 Cheyenne

VIN 2GCHC39N7K
Engine7.4 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryFuel Injection / tbi
Emissionsca emissions
SymptomsExcessive Emissions, Cuts Out, MIL Lamp On
OccursHot, Cruise

Trouble Codes

44oxygen sensor lean
45oxygen sensor rich
Message Closed

car Vehicle Data

1989 Chevrolet C3500 Cheyenne

VIN 2GCHC39N7K
Engine7.4 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryFuel Injection / tbi
Emissionsca emissions
SymptomsExcessive Emissions, Cuts Out, MIL Lamp On
OccursHot, Cruise

Trouble Codes

44oxygen sensor lean
45oxygen sensor rich