I have a 2004 F250 psd. It has been giving me all sorts of trouble lately. It had hard starts when i bought it and finally looked into it and it had an ICP code. So I changed out the ICP and its worse now. When I start it in the morning, it runs for a brief second and dies, does this about twice and finally it will start after cranking for a while and I actually have to rev it up to keep it running. I took it to the local diesel shop and they only got it to do this once. I picked it up and it does it all the time after sitting for just a few hours. They suspect the HPOP, but would this be a sign of the HPOP going out?
Thanks for the input