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1998 Ford F-150 Lariat 4.6L MIL Lamp on
Posted to Ford Driveability on 3/9/2005 23 Replies

Four months ago we replaced both front O2 sensors after checking for vac leaks,fuel pressure &[...] came back today with same codes P0171&174 A/F rato too lean at max rich [...] checked everything we could think of and followed flow chart from [...] we missing...

23 Replies Received (View Replies)

  Related Documents & Media  1998 Ford F-150 Lariat

 
Message Closed w/FIX

car Vehicle Data

1998 Ford F-150 Lariat

VIN 2FTZX1768W
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)
Message Closed w/FIX

car Vehicle Data

1998 Ford F-150 Lariat

VIN 2FTZX1768W
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)