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Re: 2003 Ram 3500 5.9L fuel pump conversion
Posted to HD/Fleet Forum on 3/6/2020 1 Reply

IIRC, the programming is to address the way the ECM monitors the FP control circuit, because it now runs a relay instead of a pump, and it may set a code otherwise. The in-tank kit is great because it solves several issues: the original sending unit were probl... Login to read more.

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