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2003 Cadillac DeVille 4.6L Poor Idle Quality, Misfire, MIL Lamp on
flushed fuel tank and lines replaced all injectors fuel filter, coil packs new ac delco plugs and boots, new plenum gasket and boot from throttle body to plenum, car has a steady misfire on cyl 7 and occasional on cyl 8. have checked and rechecked and at a los...
Summary posted 1/23/2018
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Related Documents & Media | VIN | 1G6KD54Y63 |
| Engine | 4.6 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0300 | Multiple Misfire Detected |
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Vehicle Data
2003 Cadillac DeVille
| VIN | 1G6KD54Y63 |
| Engine | 4.6 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0300 | Multiple Misfire Detected |
Video