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2004 Ford F-150 FX4 5.4L Misfire, MIL Lamp on
Posted to Ford Driveability on 11/29/2013 23 Replies

Ford Techs Help Please.

Short test results are from freeze frame for P0171, Fuel pressure is within spec KOEO and Matches PID for FRPS, test drove MAF reading max was only 180 G/sec, replaced MAF with NAPA reman, MAF reading now maxes out at 200 G/sec, checke...

23 Replies Received (View Replies)

  Related Documents & Media  2004 Ford F-150 FX4

 
Message Closed w/FIX

car Vehicle Data

2004 Ford F-150 FX4

VIN 1FTPW14514
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways, Under Load
Misc.3-Valve Engine

Trouble Codes

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

car Vehicle Data

2004 Ford F-150 FX4

VIN 1FTPW14514
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways, Under Load
Misc.3-Valve Engine

Trouble Codes

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