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[klhansen]

Originally Posted by Dirtcheap

my sis-in-law just called to tell me that a friend who is a retired ford mechanic ( not diesel ) hooked his machine ( dont know what kind ) up to the X and it now says that the fuel pressure regulator is bad ( not the fuel pump like ford originally said ) ?????? are the scan machines that ford has gas/diesel specific, or does it matter ???

I know for a fact that the PCM on a powerstroke doesn't monitor fuel pressure, so it can't tell you that the fuel pressure regulator is bad.

What it does monitor is the voltage to the fuel pump, which tells you if the fuel pump doesn't have power when it should.

In the friend's defense, Ford occaisionally calls the IPR (Injection Pressure Regulator) a fuel pressure regulator, but it does that indirectly.

I'm thinking with ASEmechanic that it's related to the HP oil system, although I've read from someone who's pretty knowledgeable here that a lack of fuel can set a P1211 due to fuel starvation. What happens is that there's no resistance (lack of fuel in the injectors) and the HP oil pressure drops off too fast for the HPOP to keep up.

Check your fuel pump relay (or verify that the fuel pump is getting voltage or running when you turn the key on).

Also check that IPR solenoid as well as what others have suggested.

Good luck