Mechanics

TROUBLE CODES P0171/ PO174

2000 Ford F-150

Computer problem
2000 Ford F-150 6 cyl Two Wheel Drive Automatic 120494 miles

replaced plugs/ plug wires/ fuel filter/ 4 oxygen sensors/ MAF sensor. Still getting the trouble codes P0171/ P0174. All replacement parts were napa. What is left to replace?
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Henry livingston
November 10, 2010.



Prolly a leaking intake gasket.

What liter motor?
4.2?

Talk to me.