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2005 6.0 no start with no oil pressure on dash gauge
This is my first post so pardon the duplicity. I've checked several threads and find similar but slightly different problems. I have a 2005 f350 dually with 6.0 and 96,700 on the odometer. The build date is 09-27-04 and sticker on pass valve cover says 2005. Truck shutoff while driving and will not start ( from all I've read not uncommon ). I'm the second owner and reviewed the oasis report the previous owner had done under warranty. Typical repairs including
FICM, ICP sensor, STC fitting upgrade, dummy plugs, egr and oil cooler. The part number for the STC was for the upgraded connector which screws in. This was done in August of 2010 so I believe the repair was done right.
I have followed a troubleshooting a no start condition found on one of these forums. Pulled codes with AE and found P2285, P2290, and P2291. Checked ICP pressure which showed between 11-14 psi. ICP voltage while cranking .26 volts. FICM showed 48 volts, IPR went between 14 - 84 %. Tried to start with ICP disconnected and would not start. ICP appears clean as well as the connector. Changed fuel filters. Found an aftermarket oil filter cap on truck and replaced that with oem along with new filter and oil. Still nothing. Removed oil filter and had engine cranked and oil flowed into the housing. The dash gauge for oil pressure never moves even after long cranking. I'm at wits end on this and that's not a far trip.
Can a hpo system leak prevent oil pressure on the low side? I found a thread somewhere that it is possible for a big leak to affect the low side and dash reading. Also read that one person had a relief valve go bad somewhere near the lpop. Trying to plan my next course of action. I'm sure many will recommend the ICP air connection and that will most likely be the next step. With the alleged updated STC fitting I'm confused where such a big leak would be. I also read that the hpop is more reliable on 05's and later. Leads me to believe a bad IPR valve. Hate to throw parts blindly. Can a dirty EGR valve cause a stall and no start? Any thoughts on this would be greatly appreciated.