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1999 Ford F-150 Lariat 4.6L Misfire
Posted to Ford Driveability on 2/20/2007 16 Replies

This engine misses under a light load and low RPM when going up a hill. It can happen at 20MPH or 50MPH. It will miss three or four times and then it is fine. It does it with the EGR and the Canister purge un-hooked. Both of the O2 sensors show normal patterns...

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  Related Documents & Media  1999 Ford F-150 Lariat

 
Message Closed w/FIX

car Vehicle Data

1999 Ford F-150 Lariat

VIN 1FTRX17W6X
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursUnder Load

Trouble Codes

P0135Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction
Message Closed w/FIX

car Vehicle Data

1999 Ford F-150 Lariat

VIN 1FTRX17W6X
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursUnder Load

Trouble Codes

P0135Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction