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1999 Ford Expedition Eddie Bauer 5.4L MIL Lamp on
Posted to Ford Driveability on 11/15/2009 9 Replies

vehicle came in with p0131 o2 volts low, 171 and 174 lean b1/b2. found b1 sensor unplugged. plugged it in, scanned, found lt trim b1/b2 +20% idle and +5-7% at 2500rpm's. maf read 4.6 KPa at idle. smoked system, found iac and pcv actively leaking. replaced maf,...

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  Related Documents & Media  1999 Ford Expedition Eddie Bauer

 
Message Closed w/FIX

car Vehicle Data

1999 Ford Expedition Eddie Bauer

VIN 1FMRU17LXX
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0131Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage
P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)
Message Closed w/FIX

car Vehicle Data

1999 Ford Expedition Eddie Bauer

VIN 1FMRU17LXX
Engine5.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0131Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage
P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)