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1990 Chevrolet C3500 Cheyenne 7.4L Poor Idle Quality, Cuts out, Misfire, Cold
Vehicle towed in for rough idle/ stall. Noted that the engine runs very poorly upon initial start up for approx 3-5 minuteds then runs perfectly. No codes, initially monitored tps, coolant temp, map, tested fuel pump pressure and volumn, checked timin...
FIX posted 1/15/2025
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30 Replies Received
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Related Documents & Media | VIN | 1GBJC34NXL |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Standard |
| Delivery | Fuel Injection / TBI |
| Emissions | OBDI FED |
| Symptoms | Poor Idle Quality, Cuts Out, Misfire, Cold |
| Occurs | Cold, 3-5 Minutes |
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Vehicle Data
1990 Chevrolet C3500 Cheyenne
| VIN | 1GBJC34NXL |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Standard |
| Delivery | Fuel Injection / TBI |
| Emissions | OBDI FED |
| Symptoms | Poor Idle Quality, Cuts Out, Misfire, Cold |
| Occurs | Cold, 3-5 Minutes |
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