I have replaced cps fuel pump,cleaned fuel sendinreg unit,rewiredinjectors and replaced gaskets,and replaced Icm had trk cranked but ran ruff now wont crank again. I'm completely lost. Took to ford and ran good for short time and doing same thing. All injectors tested good

 

I had a similar problem (2001 7.3L).

I assume that Ford checked everything electrical.

I wasted money on a camshaft sensor before I talked to Brandon at a shop that lets you talk to their diesel techs. He said first check the IPR...and while I was looking for it, I saw breaks and/or fraying in the wiring going to the wastegate controller, the injection pressure regulator sensor, and the fuel bowl heater.

The first and last I could solder/mend, but had to replace the IPR plug (about $30, dealer only item).

Wouldn't hurt to check the wiring harnesses for frayed or broken wires.

Doc/John

 

Ipr was replaced on original problem and cam shaft. Will ck wires. Tks

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I'm gonna try changing cps the. Tach does not move when turned over.

 

I had that same "no tach" problem, which was why I (wrongly) changed the camshaft position sensor.

Have you checked to see if any codes have been triggered? Bet you have one or 2, given that it did run a bit before crapping out again.