2003 6.0 powerstroke high/false icp
 

My hpop failed. So I replaced the, hpop, oil cooler and did an egr delete while I was at it.

The truck is running now, but is acting funny. It's idling at 875 psi. Driving seems fine, but it's hard starting.

When I first turn the key on the icp goes to a little over 4000. If I try starting while the icp is reading high it will just crank no fire. After about 15 seconds of the key being on the icp will drop suddenly down to zero. If I turn the key on and wait the 15 seconds for the icp to drop to zero it will fire up fine.

Has anyone seen this before?

Thanks in advance

I'm having the same problem on an 03. the only other thing is the injectors don't cycle anymore with the key on. Anyone?