Fuel rail pressure stuck at 27,535

pxcr440

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Joined
Sep 13, 2010
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254
06 rail pressure stuck at 27,535 all the time truck running or not ,, multiple display sources through obd2 . Change rail sensor , fca, and a blown. Relief . Still the same, rail sensor pigtail has 4.5 volts and ground . Any ideas ?

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Unhook fca and no change while running,, sounds like it's really at 27k. Return lines from motors fairly warm

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Something similar happened to me when I had a bad pigtail. I replaced it and everything went back to normal.
 
This was a engine swap , changed out long block rest was same parts. I will try the pigtail to start with and see if I can see anything on v2 out of place

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