Anyone ever hear of a glow plug relay causing loss of power to the pcm when it gets hot and shutting off the truck? I think that is what I have got going on here, I am out of other parts to swap. she starts great cold, but not when she is hot?

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so here is the background on the issue... Drive into town, (3 miles) sometimes you make it back, sometimes you get drug home. sometimes it doesn't make it out of the driveway. I have a second 97 stroke, so I have the availability to swap parts. I have swapped out the pcm, idm, new fuel pump, swapped the ipr, icp, have 3500 psi oil pressure, can injector o-rings cause a stall? had it on the computer at ford twice now, and the only thing they can come up with is a weak signal from the #1 and #3 injector... they are suggesting o-rings, but I don't see this causing a stall. Anyone got any ideas? no, I don't have any c-4

 

I'd be surprised if it was the GPR... I would look elsewhere.. How many miles on the truck? Did it just start happening out of the blue? The GPR only operates for up to 90 seconds on a cold start... after that it doesn't do anything.

 

Disconnect it at the relay to isolate gpr. I am leaning towards an oil issue. How good is current oil . I think that if the ipr didn't fix it next is crappy oil.

 

I believe it has come to injector o-rings, as it dawned on me the other day that the oil filter was black when I changed the fuel pump ( only to find it to be out of fuel). My new theory is that when the oil is cold, it has the viscosity to keep pressure in the hpop system, once the oil gets too warmed up, it blows past the o-rings and dumps all my pressure, and shuts her down. It is pretty far fetched, but thats what we are trying next