Well if u find out mine does the exact same thing replace sd idm ipr icp efuel and hpop still does it and cps

 

And everything I've done seems to help it for a while

 

When my harness melted it threw a code. When my IDM went out it threw a code. If your harness isn't melted. Just replace your glow plugs when they short that's what (I've read) causes the harness to melt. If you do not have any codes I bet your problem is else where. Also when my IDM went out it sounded dry when I shook it.

 

Maybe there's a difference between shorted vs. loss of connection. I don't think I had a code when my uvch came apart

 

Guess I'll know more about it when I crack it open to R&R the glow plugs. Like I mentioned, I will definitely be changing out the gaskets, harnesses and pig tails before the new covers go on just because what I have now is the original parts. That stuff is 18 years old, so there ain't no way I'm not going to replace it no matter how good it looks. I just ain't got that kinda luck!

If that doesn't remedy the problem, I'm down to either the IDM or the friggin' brain box in the fender well. The IDM is doable if it comes down to it but if the computer is crapping out on me, I'm bettin' a replacement one is going to make a scrooge outta me for Christmas!

I'll keep y'all in the loop of how the progression goes. I believe it would've been easier (and maybe cheaper) to trade up in the long run.

 

Also replaced glowplugs and harness on it I've just come to the conclusion I'm gonna half to live with it

 

I didn't either with loss of connection, I was surprised and rechecked with the AE, nothing.

 

Not to say this in any disrespect, but have you checked your oil level as well?

I'd be wiling to bet 5 bucks your VC pins and or UVCH harnesses are toasted out.

If you have not already ordered the parts, I will highly recomment RIFFRAFF as his prices are the best I have found anywhere, net or dealer with discount...

Under Valve Cover Harness 94.5-97
Valve Cover Gasket 94.5-97
Motorcraft Glowplugs ZD-11 - Ford 7.3L (94-03)
Valve Cover Gasket Connector Pigtail 94-97

I would also recommend to pull and replace the CPS and inspect the pigtail to see if there is anything exposed.... You said your RPM is diving... is this in respect to the truck slowing/motor revving down or is the truck revving at a higher rpm than what is being displayed on the dash? If so, its absolutely the CPS or pigtail. Use a OE CPS... the part stores chit is garbage.

 

Might want to re-check the screen and little white ball. If the fuel bowl can't vent air it has no place to go except the injectors. When my valve cover gaskets and pig tails went I did get a CEL and truck would hardly move. I couldn't see any external damage but once unplugged and valve covers off I was amassed how much damage there was.

 

Yep, on the oil level. I'm "religious" about checking that and the last oil / filter change was less than 1,000 miles ago. Replaced the fuel filter at the same time and everything still looked new inside since the rebuild (about 1500 miles ago).

I replaced the CPS yesterday with the spare one I had in the glove box. Gotta get me a couple more for the glove box now.....supply done run out! What color is recommended this week for the CPS? There's about three different choices, if I remember right (light grey, dark grey and black).

I have a warm fuzzy feeling it's going to be the UVCH and pig tails. Thanks for the RR links. I'll order them today!

 

Fuel bowl checked out good when I changed the filter not too long ago. It hadn't been too long since the bowl rebuild and I went ahead and changed the filter again when I changed the oil & filter just to make sure all was still good with the fuel system. Before I rebuilt the bowl, there was a load of crap settled in the bottom. Filter change showed absolutely nothing settled on the bottom, thank God! I was afraid I was fixin' to have to drop the tanks and clean 'em out or replace 'em.

 

I did mine, because I had melted harness connectors, so splicing was simply going to happen. It seems to be a superior design. Here's my how to.

 

Excellent write up and the photos are the icing on the cake! The decision is made. I'm going with the SD conversion. I appreciate the info! Reps headed your way.

 

Thanks, if you go parts, your pig tails with probably be a different color. Just heads up.

 

x2, so be carefull when matching up wires.