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International Automotive Technicians Network
Re: 2004 F150 5.4 '5' Lean codes P0171 and P0174
Posted to Technical Discussion Forum on 2/14/2007 1 Reply

he also said,

Freeze frame was set at 1200 rpm, 0 mph, 183'F ECT, and 22'F IAT, 54% load.

since freeze frame shows it happened at idle, 0 mph, it is running lean then at idle and off idle. since freeze data shows it happened at idle and he is not seeing ex... Login to read more.

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