Ford 7.3 Passenger Bank Dead

Yes. Story goes it is a single family owned. Ran until it didn't then parked. Then son got truck running and it ran until it didn't.

I bought it as a crank no start. Looks like the son started 'modding' the truck (there was 140 HP tune in hydra when I got it) and installed the typical 18y Old kid stereo. I found the dash harness cut for the stereo, cigar lighter, and 12 v and the wires were twisted together by hand then covered with cheap electrical tape.

Best I can deduce the wires were continually grounding on the dash frame. That probably fried the gem. The increased HP and driving style probably cooked the IDM, main harness, and injectors. In hindsight I probably could have re-oringed the injectors and re shimmed them, but at 275K easier to replace. I have waaaaay more into this truck than intended but should have a good vehicle once complete.

Thaks to all your help that is!

-Joe

Status update:

Power steering pump swapped, Pulley was so rusted it busted my tools, but got her done.
AC was a total loss, so much crap in system had to change compressor, condenser, Front and rear evap, expansion valve, drier and orifice tube. Then it held vacuum overnight. Took 4.5 lbs of R134a or 5.5 cans (12 oz)

Went to do a fluid replacement for rear end and guess what? .5 gallon of water came out before oil, sigh. It must have been recent because no rust in the housing. Ordered a finned Ford cover since I'm in there. Waiting on parts. Looks like rear diff vent rubber hose was off for a while, I fixed that as well.

Trans pan drop and filter replace went smoother, seems to be ok.

I an fixing some minor odds and ends, waiting for last bits and bobs, but reassembling now. Instrument bezel went back in and finalizing some wiring, need to finish rear backup camera (that was fun running wire through hatch.), just got to drill it into rear glass handle plastic.

Should be insured and tagged by end of week, FINALLY!

-Joe

Glad it's coming together for you. Hopefully it runs right for you.

ok, weird issue.
I have been driving the Ex in and out of the work area for weeks.

I reassembled everything (interior, dash, etc.) and got the family together for the inaugural around-the-neighborhood test. I loaded everyone up, and guess what? Crank no Start. There's nothing like looking like an idiot in front of the family.

Once I could see a color other than red, I started to reverse the reassembly and found this: When the 2 small screws are used to attach the plastic PCM holder to the metal frame I get a No PCM detected from ForScan. Remove the screws and the truck starts up. The best I can gather the torque is messing with the hydra (because the main harness is in a grommet that flexes).

Should I have cut a hole in the plastic PCM frame? I just slid (pressed) it over top of the PCM and chip.

Thoughts, Joe?

NitroJoe said:

ok, weird issue.
I have been driving the Ex in and out of the work area for weeks.

I reassembled everything (interior, dash, etc.) and got the family together for the inaugural around-the-neighborhood test. I loaded everyone up, and guess what? Crank no Start. There's nothing like looking like an idiot in front of the family.

Once I could see a color other than red, I started to reverse the reassembly and found this: When the 2 small screws are used to attach the plastic PCM holder to the metal frame I get a No PCM detected from ForScan. Remove the screws and the truck starts up. The best I can gather the torque is messing with the hydra (because the main harness is in a grommet that flexes).

Should I have cut a hole in the plastic PCM frame? I just slid (pressed) it over top of the PCM and chip.

Thoughts, Joe?

Click to expand...

Typically when I install a hydra I cut a window out of the pcm holder. Seen guys just not run it, but that doesn’t give me the warm and fuzzies.


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Update: I cut the window for Hydra, and the problem is solved. The truck starts every time. I put 35 miles on it so far, and it is acting okay. It keeps throwing a glow plug 1 error, and I'm not sure why, as everything is new. It starts hot, cold, and in between. AC is 40 degrees and pumping.

The water in the differential got me though, the rear whines badly. Now I get to tear apart the diff and do bearings.

So close, waiting on parts. I'm going to use a crush sleeve delete.

NitroJoe said:

Update: I cut the window for Hydra, and the problem is solved. The truck starts every time. I put 35 miles on it so far, and it is acting okay. It keeps throwing a glow plug 1 error, and I'm not sure why, as everything is new. It starts hot, cold, and in between. AC is 40 degrees and pumping.

The water in the differential got me though, the rear whines badly. Now I get to tear apart the diff and do bearings.

So close, waiting on parts. I'm going to use a crush sleeve delete.

Click to expand...

Does this have a glow plug module, or a glow plug relay? Could be the module is bad, if it has one. Other thing to do would be to unplug the valve cover gasket, and run a test light from the positive battery cable to each glow plug pin on the valve cover gasket. They should all light up and light up the same, could have one with incorrect resistance or something.


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