1998 Ford F 150 F150 Gasoline 5 4l Motor 2 Codes Lean Bank 1 P0171 P0174

1998 FORD F-150
100 MILES
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i have a ford f150 with the gasoline 5.4l motor in it, it has the 2 codes for lean bank 1 and 2 (p0171 and p0174)
how do i test the maf sensor and can or should it be cleaned at all?
Dec 30, 2012 at 11:42 PM
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