04 f-250 crank no start IPR?

[daheemstra]

I had low HPO and initially pulled a p2291 (Low ICP While Cranking) code. So I replaced the dummy plugs, standpipes, checked injector o-rings, new o-rings and screen on ipr, replaced screen under oil cooler, blocked egr, and checked hpop. Now I tried to restart and it just cranks. It pulls a p2287 (ICP sensor intermittent) code. Ive heard you can unplug icp and it will start if its bad. I unplugged and got p2285. I'm no mechanic and this was a pretty big undertaking. Im using an sct to get codes. Any ideas? I do have an ipr controller and my icp fitting is coming tomorrow to air test.

I have good low pressure oil. Today I hooked up a dial guage to the icp and cranked it. Got 0 psi. I hooked up 120 psi to it and heard air. When I commanded the ipr there was no change in sound. Could a stuck ipr really read 0 psi of oil pressure? Also the oil was low and I dont have any to add yet. Im using an OTC IPR Command Tool.

[daheemstra]

I put a new IPR in and that solved my leak test issue. It seems to be holding air now. Guess the only thing left is the HPOP?

[twoicebergs]

I would have expected some ICP if it was just the IPR, but if it was wide open, you could get next to nothing. The next test is the money shot with the test crank. Check your wires and plug to the ICP, it may have been damaged on your removal or install.

[kaya@bernhausen]

so how much pressure does it build now with the new ipr? you are going to have a tonne of air in the system, you know