96 F350 PSD 187,000 miles
So heres the story: In January, I had a local shop with a solid rep replace the fuel supply pump (was leaking) GP's, VC gaskets, UVCH's and due to the #6,8 harness having a melted connection, they spliced in an aftermarket pigtail as well. Now when I dropped the rig off, it ran solid with the exception of hard starting due to 7 out of 8 GP's having gone bad, yet the shop told me that a P1298 code showed up and my IDM was failing. I jumped on here to double check that code and found that it could be a number of things and even the shop said it could be the melted harness and that they would check for codes again after they fixed everything.
So they button it all back up and they said it felt like it was "missing" and a P1668 code came up and when they did "pinpoint tests" the found the IDM was indeed failing. I had a spare 110 IDM so i told them to not replace it and I would do it. I go to pick the rig up and she runs great...after a few hundred miles, the "missing" starts...goes away and comes back intermittently...it can be cold or hot, right at startup or after a 4 hour trip. I finally had enough and swapped in the spare IDM and the problem still exists. I went back to the shop and bought the IDM they would have installed thinking that perhaps my spare was flawed as well, yet the one from the shop doesnt fix it either.
Then i change the CPS because i thought the new one (dark blue) i put in last summer could be taking a crap but that doesnt fix it either.
So, next up is replacing all the NEW wiring and see what that does, but I wanted to get your guys' take on if an injector would go bad coincidentally at the same time as all the wiring gets replaced?
All your help is appreciated! Think its time to buy AE...