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1999 Ford F-150 Lariat 5.4L Poor Idle Quality, Misfire
Came in with code P0304 - Cyl #4 Misfire and had a dead miss on #4. Replaced plugs and plug boots, still had miss on #4. Checked injector pulse with noid and had steady pulse. Same with coil driver circuit. Swapped #4 coil and Injector with #1 coil and Injecto...
FIX posted 11/10/2007
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Related Documents & Media | VIN | 1FTRX08LXX |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / Port Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Intermittently |
| Misc. | 4X4 Ext Cab |
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Vehicle Data
1999 Ford F-150 Lariat
| VIN | 1FTRX08LXX |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / Port Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Intermittently |
| Misc. | 4X4 Ext Cab |
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