
1999 Ford F-150 4.6L Misfire
Customer recently purchased this vehicle and was told there was a weak coil. Replaced coil idles fine but will misfire when going uphill, if accelerator is increased misfire goes away. Checked spark plugs for 4 & 7 and found them to be fine and barely used. Ve...
FIX posted 5/17/2010
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VIN | 2FTRF18W7X |
Engine | 4.6 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | Misfire |
Occurs | Going Uphill |
Misc. | Fleetside |
Trouble Codes
P0100 | MAF Sensor Signal Voltage Too High |
P0153 | Air Fuel Sensor (Bank 2 Sensor 1) Slow Response |
P0304 | Cylinder 4 Misfire Detected |
P0307 | Cylinder 7 Misfire Detected |
Message Closed w/FIX
Vehicle Data
1999 Ford F-150
VIN | 2FTRF18W7X |
Engine | 4.6 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | Misfire |
Occurs | Going Uphill |
Misc. | Fleetside |
Trouble Codes
P0100 | MAF Sensor Signal Voltage Too High |
P0153 | Air Fuel Sensor (Bank 2 Sensor 1) Slow Response |
P0304 | Cylinder 4 Misfire Detected |
P0307 | Cylinder 7 Misfire Detected |