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Re: 2004 F150 5.4 '5' Lean codes P0171 and P0174
Posted to Technical Discussion Forum on 2/15/2007

What is baro learned to? I had a 00 5.4 (L) that the crank gear keyway was damaged setting valve timing of one bank off. Baro was in the 130's (154-157 is normal for here). The RS bank was off (cmp is in the LS head)so it didnt set a cam/crank correlation code... Login to read more.