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International Automotive Technicians Network
P0171 & P0174 possibly intermittent
Posted to Technical Discussion Forum on 2/23/2009 9 Replies

I have this Ford that came in with P0171 & P0174. Runs fine everything checks out ok at this time.

Freeze Frame

RPM 1319

Fuel system Closed loop

ECT 163 degrees

STFT 1 +0.8%

LTFT 1 +10.2%

STFT 2 0.0%

LTFT 2 +7.0%

VS MPH 0.0

Load 58.4%

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car Vehicle Data

2001 Ford Expedition XLT 5.4L

Engine5.4 L
Trans4-speed Automatic (Electronic)

car Vehicle Data

2001 Ford Expedition XLT 5.4L

Engine5.4 L
Trans4-speed Automatic (Electronic)