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1990 Chevrolet K3500 Cheyenne 7.4L Excessive Emissions, Poor Idle Quality, Misfire
Truck runs rough backfires through throttle body, runs very rich, block learn on scanner is 105 all the time on scanner, Runs better when warm although still seems rich, any help would be welcomed thank you in advance
FIX posted 7/6/2005
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16 Replies Received
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Related Documents & Media | VIN | 1GCGK34N2L |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / TBI |
| Emissions | US Fed emissions |
| Symptoms | Excessive Emissions, Poor Idle Quality, Misfire |
| Occurs | Cold |
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Vehicle Data
1990 Chevrolet K3500 Cheyenne
| VIN | 1GCGK34N2L |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / TBI |
| Emissions | US Fed emissions |
| Symptoms | Excessive Emissions, Poor Idle Quality, Misfire |
| Occurs | Cold |
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