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1988 Chevrolet C3500 Cheyenne 7.4L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on
I know this should be easy but it is puzzling me. This truck has a code 45, o2 sensor pegs at 800mv, if reved to about 2,000rpm 02 sensor will come down a little and occasionally even start reacting normally except is sluggish. All o2 sensor testing looks OK. ...
FIX posted 6/9/2005
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Message Closed w/FIX
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Related Documents & Media | VIN | 2GCHC39N5J |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / TBI |
| Emissions | OBDI, US FED |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp On |
| Occurs | Hot |
| Misc. | New Engine |
Trouble Codes
| 45 | rich exhaust |
Message Closed w/FIX
Vehicle Data
1988 Chevrolet C3500 Cheyenne
| VIN | 2GCHC39N5J |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / TBI |
| Emissions | OBDI, US FED |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp On |
| Occurs | Hot |
| Misc. | New Engine |
Trouble Codes
| 45 | rich exhaust |
Video