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2001 Ford F-450 Super Duty XL 6.8L MIL Lamp on
Posted to Ford Driveability on 4/29/2009 11 Replies

Replace fuel pump last week, low fuel pressure 25 psi, 34-36 at rpm. Drive 20 -30 miles lean codes come back, long term reaches 12% and will go into drive open loop, under 6% load. above that will go into close loop. Checked for vac leaks with smoke , no leaks...

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  Related Documents & Media  2001 Ford F-450 Super Duty XL

 
Message Closed w/FIX

car Vehicle Data

2001 Ford F-450 Super Duty XL

VIN 1FCNF53S4Y
Engine6.8 L / 10 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursOn Decel, Idle
Misc.Motohome

Trouble Codes

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

car Vehicle Data

2001 Ford F-450 Super Duty XL

VIN 1FCNF53S4Y
Engine6.8 L / 10 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursOn Decel, Idle
Misc.Motohome

Trouble Codes

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