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1998 Ford F-150 4.2L MIL Lamp on
Posted to Ford Driveability on 8/23/2004 11 Replies

This truck came in with codes P0171 and P0174 Too lean bank #1 & 2. I checked the waveform on the oxygen sensors and found that the front sensors were very noisy. I pulled five gas readings and all the readings were normal and the air to fuel ratio is perfect ...

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  Related Documents & Media  1998 Ford F-150

 
Message Closed w/FIX

car Vehicle Data

1998 Ford F-150

VIN 2FT2F1720W
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
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

VIN 2FT2F1720W
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

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