How/s it going guys. New to the forum but have been using it for a long time. To get into it, I have a 2006 6.0 with about 193,000 miles. Ive done my own maintenance, replaced injectors, ipr valves, standpipes/dummy plugs, ficms, stc fittings, water pump, egr delete, replaced turbo. So as you can see ive gotten to know my truck very well.
Here is my current issue: Over the weekend on my way home from out of town, I pulled into a rest stop. The truck had been running great aside from a slight boost leak. After about 170 miles I left the truck on because ive been having a no start hot issue (suspected passenger side standpipe). The truck made the trip up to where I was going just fine with no issues. My truck has been fine dealing with it so far stays on and once it cools down starts right back up, but this time the truck started to skip after I parked and eventually died at the rest stop. I kept trying to start it once it got cooler and my IPR was maxed so I suspected it went out. I towed it home and replaced the IPR and the DP's and standpipes since I was there already. Now the truck still won't start. All my numbers are normal, FICM 12V and 48+ to injectors, IPR maxes at crank then comes back down to 30-40% after a few seconds, my ICP is around 800 to 1000 which I know is high but it levels out once it gets running. Ive unplugged the ICP sensor still no change when starting. Ive exhausted my experience in trouble shooting this issue, ive checked all wiring harnesses, sensors, fuses, unplugged ficm plugged in again, I made sure to triple check the parts installed were solid before putting everything back together. I do realize it takes a while to build pressure back when youve opened the oil system to air, but it has never taken this long. Whats more confusing is that it will start and have like a failing ficm sound to it and then run for a few seconds and then die off. It does also crank much longer than usual about 8-10 seconds. My FICM power as I said is 12 volts and my batteries were kept juiced. I doubt I have a bad HPOP but could it be possible that it is? I did do an oil change and added stiction additive about 500 miles ago so I know my oil isnt contaminated. Any help out there? Thanks fellas!
Here is my current issue: Over the weekend on my way home from out of town, I pulled into a rest stop. The truck had been running great aside from a slight boost leak. After about 170 miles I left the truck on because ive been having a no start hot issue (suspected passenger side standpipe). The truck made the trip up to where I was going just fine with no issues. My truck has been fine dealing with it so far stays on and once it cools down starts right back up, but this time the truck started to skip after I parked and eventually died at the rest stop. I kept trying to start it once it got cooler and my IPR was maxed so I suspected it went out. I towed it home and replaced the IPR and the DP's and standpipes since I was there already. Now the truck still won't start. All my numbers are normal, FICM 12V and 48+ to injectors, IPR maxes at crank then comes back down to 30-40% after a few seconds, my ICP is around 800 to 1000 which I know is high but it levels out once it gets running. Ive unplugged the ICP sensor still no change when starting. Ive exhausted my experience in trouble shooting this issue, ive checked all wiring harnesses, sensors, fuses, unplugged ficm plugged in again, I made sure to triple check the parts installed were solid before putting everything back together. I do realize it takes a while to build pressure back when youve opened the oil system to air, but it has never taken this long. Whats more confusing is that it will start and have like a failing ficm sound to it and then run for a few seconds and then die off. It does also crank much longer than usual about 8-10 seconds. My FICM power as I said is 12 volts and my batteries were kept juiced. I doubt I have a bad HPOP but could it be possible that it is? I did do an oil change and added stiction additive about 500 miles ago so I know my oil isnt contaminated. Any help out there? Thanks fellas!