I shared a problem I'm having on another forum and received no assistance so here I am in the NATION.
My problem is my truck loses power under acceleration and dies randomly. I had it scanned at Oreilly's and a shop and they both told me they couldn't communicate with my computer so I replaced the computer, no change in performance. Turns out neither of them knew how to scan a SuperDuty. I took it to another shop for a scan and they said I had multiple codes and I needed to leave it for diagnosis. They said it was most likely a CPS
but it had codes for low fuel pressure too. I replaced the CPS
and it got better but still had low power and dies randomly. Since then I have replaced my air filter, my fuel filter, tested my fuel pressure and adjusted to 60 psi
, rebuilt the IPR
and replaced the ICP
. I sill lose power on acceleration and the truck still dies randomly. I downloaded FORSCAN and I see ICP
numbers reach 1700 psi
during acceleration and suddenly drop to 700 psi
when it loses power. My IPR
numbers are about 20% at idle and when the truck loses power the IPR
numbers are about 65%. I changed my oil but that didn't change performance either. I took a resistance reading across the 2 terminals of the IPR
and got a reading of 10 ohms. I don't think that's too bad. I expected somewhere around 2-5 ohms but I don't think 10 is unreasonable. When I rebuilt the IPR
I could not unscrew the innards out of the IPR
so I'm not 100% sure there isn't any gunk stuck in the spring however I did clean it as well as I could and it seemed to move freely when I pushed on the plunger. I have a new IPR
on the way and if that doesn't fix my problem I think I'll have no choice but to replace my HPOP
. Can anyone help? If you have an idea or any suggestions I would greatly appreciate hearing them. One last thing, I have already done the $.50 UVC
harness mod on both sides. All of these problems started just before my TS6 chip arrived so I haven't even been able to enjoy what I expected was going to be a great improvement.
Sorry for the long read but I wanted to be a thorough as possible so there wouldn't be any guessing as to what I have or haven't done.