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2003 Silverado 2500HD P1093

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  • November 21, 2013 at 5:50 am #564048
    MikeMike
    Participant

      Hi All~
      I have a P1093 (fuel pressure low during power enhancement) in a duramax diesel LB7 motor. Has anyone worked on a duramax and experienced this before? Any idea of common causes? I am leaning towards the fuel pressure regular…but I haven’t tested it yet.

      Thanks in advance,

      Mike

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    • November 21, 2013 at 5:59 am #564054
      BillBill
      Participant

        Have you changed the fuel filter lately? If not I would start there before anything else.

        November 21, 2013 at 6:19 am #564073
        Kevin CriswellKevin Criswell
        Participant

          I’d start with the filter also.

          As you can see below this is not an easy code to diagnose.

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          November 21, 2013 at 7:14 am #564080
          MikeMike
          Participant

            Thanks….I was thinking that as well…it isn’t my car…i replaced all 8 injectors about a year ago, and it sat for 18 months before I got my hands on it with the fuel system exposed…the owner drives it a lot as well

            November 21, 2013 at 2:16 pm #564146
            college mancollege man
            Moderator

              see if this helps.

              http://www.justanswer.com/car/0dxzi-fuel-problem.html

              http://www.justanswer.com/chevy/3nfdp-6-6duramax-p0087-p1093-p1094-lack-power-hard-accel.html

              November 22, 2013 at 4:32 am #564158
              Kevin CriswellKevin Criswell
              Participant

                You know, I have worked on many Duramaxes, but my old boss had one when I worked as a construction fleet manager. And if he did not change the fuel filter on time the system would first reduce power and than eventually fail to start till the filter had been changed to prevent engine damage.

                November 28, 2013 at 3:14 am #565480
                EricTheCarGuy 1EricTheCarGuy
                Keymaster

                  Seems like the fuel filter would be a great place to start based on the posts here. I would agree with that.

                  Keep us posted on your progress.

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