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1991 Chevrolet C2500 Cheyenne 7.4L Poor Idle Quality, rough
Hello all. This truck has an extremely rough idle when first started. Today the temp at startup was 93 degrees. KOEO readings- Block learn was 122, baro 29.3,base Pulse width 18.2 On startup, KOER readings- Base pulse width 1.6,coolant temp 93 degrees, map 9.5...
FIX posted 6/27/2007
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Related Documents & Media | VIN | 2GTGK29N6M |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / tbi |
| Emissions | fed |
| Symptoms | Poor Idle Quality, Rough |
| Occurs | Always-Worse Cold |
Message Closed w/FIX
Vehicle Data
1991 Chevrolet C2500 Cheyenne
| VIN | 2GTGK29N6M |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / tbi |
| Emissions | fed |
| Symptoms | Poor Idle Quality, Rough |
| Occurs | Always-Worse Cold |
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