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2009 Ford Expedition EL Limited 5.4L Hesitation
Posted to Ford Driveability on 5/24/2019 10 Replies

Came In for a hesitation under load, codes for both banks lean. Volumetric efficiency test found it's not perfect but also not bad considering the mileage. Monitoring fuel trims while driving found that Everytime it happens short term drops to -20 range on...

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car Vehicle Data

2009 Ford Expedition EL Limited

VIN 1FMFK20509
Engine5.4 L / 8 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsHesitation
OccursUnder Load, Intermittently

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)
Open Help Request

car Vehicle Data

2009 Ford Expedition EL Limited

VIN 1FMFK20509
Engine5.4 L / 8 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsHesitation
OccursUnder Load, Intermittently

Trouble Codes

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