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Re: 7.3L diesel HPOP testing
Posted to HD/Fleet Forum on 6/7/2019

Charles, I have an update for you. I pushed the truck aside so I could get other stuff done. When I came back to it I put a labscope on the yellow control wire of the IPR and found that the PCM would pulse that wire to ground for less than a second then quit i... Login to read more.