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1997 Ford Expedition XLT 5.4L Poor Idle Quality, Hesitation, Stall, MIL Lamp on
Posted to Ford Driveability on 10/11/2004 16 Replies

The vehicle almost stalls and runs rough,hesitates. Chech engine light is on. Checked fuel filter,it is o.k. Cleaned MAF and it reads o.k. Both upstream and downstream O2 sensors reads 0mV. Does anyone have any help?

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Message Closed w/FIX

car Vehicle Data

1997 Ford Expedition XLT

VIN 1FMFU18T9V
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, Stall, MIL Lamp On

Trouble Codes

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

car Vehicle Data

1997 Ford Expedition XLT

VIN 1FMFU18T9V
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, Stall, MIL Lamp On

Trouble Codes

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