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1998 Ford F-150 Lariat 5.4L Poor Idle Quality, Hesitation, MIL Lamp on
Posted to Ford Driveability on 5/5/2010 15 Replies

Hello Iatn, Need Ford gurus help. This truck came in after failing the emmision test. The codes were a p0171 and p0174. I have had this problem before on this truck and had already replaced the pcv hose assy. I pulled the hose to check it and it was ok. One th...

15 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 1FTRX07L5W
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, MIL Lamp On
OccursHot, on Accel, Cruise, Idle

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 1FTRX07L5W
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, MIL Lamp On
OccursHot, on Accel, Cruise, Idle

Trouble Codes

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