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2004 Pontiac Grand Prix GTP 3.8L Poor Idle Quality, Misfire
Misfire on #4 and #3 cylinders at idle, cuts in and out under load. Have replaced plug wires, plugs, smoked the vacuum system, replaced coil packs and module, had the injectors checked and cleaned, checked compression, and fuel pressure-all within specs. #4 mi...
FIX posted 4/2/2010
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Related Documents & Media | VIN | 2G2WR52404 |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Always |
| Misc. | Super Charged |
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Vehicle Data
2004 Pontiac Grand Prix GTP
| VIN | 2G2WR52404 |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Always |
| Misc. | Super Charged |
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