2003 Ford F-150 XL 4.6L Poor Idle Quality, Misfire, MIL Lamp on
Truck misfires intermittently, neither engine temp nor run time seem to affect the condition. Normally occurs worst at around 1800 RPM's (45 MPH). I tried swapping the coilpacks between #8 & #5 condition remained the same. Then swapped the plugs #8 & #5, same ...
FIX posted 5/28/2010
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Vehicle Data2003 Ford F-150 XL
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2003 Ford F-150 XL
VIN | 1FTRX18W13 |
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 | Intermittently |
Trouble Codes
P0308 | Cylinder 8 Misfire Detected |