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1999 Chevrolet Express 3500 7.4L Poor Idle Quality, Misfire
This van came in running very rough. We replaced cap, rotor, wires, plugs and ICM with OEM parts. The crank signal and MAF signal look good with the Vantage. Fuel pressure is slightly below spec at 50 at idle. Throttle snap the FP goes to 58. Misfire counter s...
FIX posted 3/15/2004
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11 Replies Received
11 Replies Received
Related Documents & Media | VIN | 1GBJG31J7X |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SFI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Hot, Under Load, on Accel, Idle, Intermittently |
| Misc. | None |
Message Closed w/FIX
Vehicle Data
1999 Chevrolet Express 3500
| VIN | 1GBJG31J7X |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SFI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Hot, Under Load, on Accel, Idle, Intermittently |
| Misc. | None |
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