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Re: 6.4L Part Time Runs Bad
Posted to HD/Fleet Forum on 7/23/2020 2 Replies

I ran new wires from pump connector to pcm. I ran KOEO this morning and get active P0091. Disconnected the 4 wire connector at the pump and reran KOEO and P0091 gone. Looks like I have a problem with the new pump I installed. Yes it was from Ford. Login to read more.

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