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Re: 2003 7.3 random no start P1670
Posted to HD/Fleet Forum on 11/15/2008 3 Replies

Will it perform an injector buzz test? Have you tried forcing a hard fault? Disconnect on valve cover connector and crank over the engine--if it starts, fine. Then re-run the buzz test and KOEO. If you get injector codes, it's the PCM. No injector codes is the... Login to read more.

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