https://www.dieselbombers.com/ Discussion of 6.0 Liter Ford Powerstroke Turbo Diesels en Sat, 16 May 2026 08:54:43 GMT vBulletin 60 https://www.dieselbombers.com/images/misc/rss.jpg https://www.dieselbombers.com/ https://www.dieselbombers.com/ford-powerstroke-03-07-6-0l/140451-new-icp-hpop-ipr-still-having-problems.html Mon, 20 Apr 2026 01:38:30 GMT So, my HPOP went out last year. I replaced it and the truck seemed to run fine. I noticed a "hickup" driving home one day. Truck died, then started right up. Happened again and then would not start. I thought the HPOP died, I got a new HPOP from one of the top recommended vendors mentioned here. Well, I tear into the engine to find the top O ring from the J tube had looked like it failed on one side. I then did a pressure test to find the passengers side oil rail also had a failed O ring. I replaced everything! Did a pressure test and the truck had no leaks! Now I start the truck up and it idles fine for one minute. When the truck idles fine for the one minute, my truck starts hunting for a smooth idle.

KOEO-
ICPv - 0.2
FMP - 48v
Ficm sync- 0
HPOP- 78.7
IPR- 14.7
When I start the truck and it runs fine for the short minute with a smooth idle, Torque shows me the following:
ICPv- jumps to 1.9 and steadies at aprox 2.8- 3.2v
IPR- 52%
HPOP- 2500
Ficm sync - 1
Ficm voltage - 48

Then, the truck starts hunting for idle and sounds terrible!
ICPv - 1.7
IPR - 27.5%
HPOP -933 psi
Ficm sync - 1
Ficm voltage - 48
ICPv 3.7v and runs with a smooth idle, FICM sync = 1, HPOP is showing about 2500psi, FICMv 48. Then the truck starts hunting for an idle ICPv is about 1.7v, IPR is 43-54%, FICM sync - 1,

I do not know why my IPR is high when the truck first starts and then drops to where it should be at idle and then runs like CRAP?

I need some Help please :) ]]> Ford Powerstroke 03-07 6.0L Ozz https://www.dieselbombers.com/ford-powerstroke-03-07-6-0l/140451-new-icp-hpop-ipr-still-having-problems.html