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  1. T

    2003 lb7 rail pressure drops under load

    There is a releive valve on them..it sucks to get to and sucks to change
  2. T

    2003 lb7 rail pressure drops under load

    I beleive it was either a p1093 or p0083. Something like that...
  3. T

    2003 lb7 rail pressure drops under load

    Just started one day. On the highwY going up a hill check engine light came on and threw my scanner on it. Said low rail pressure and went into limp mode...reset codes. And I could watch the rail pressure go from 20000 and then going up hill it would drop to like 2000 PSI But so far I have...
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