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O2 Sensor? 1989 C2500 5.7

Hi All, My 89 C2500 is running silly rich. It smells bad and I get buildup on the plugs somewhat regularly fouling one.. My first guess is the ECU is in some kind of a limp mode as the PO apparently eliminated the O2 sensor. At least I think this truck had an O2 sensor, I am not entirely...
- Triplesn8s
- Thread
- Feb 10, 2024
- c2500 camper special o2 sensor
- Replies: 7
- Forum: Engine Performance + Maintenance
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C2500 Camper Special

Hi All, Newbie here. About 5 years ago I rescued a 1989 Cheyenne C2500 5.7 Camper Special from oblivion. I have refurbished it with the usual parts over time but the motor is tired. Probably has 300k on it. i am a minor owner of a small machine shop and use it for customer deliveries cause...
- Triplesn8s
- Thread
- Feb 10, 2024
- Replies: 9
- Forum: Introduction