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95 6.5 TD.........Oil Pressure Switch???????

Discussion in '1982-Present GM Diesel' started by ChevyDrivnRdneck, Dec 13, 2002.

  1. ChevyDrivnRdneck

    ChevyDrivnRdneck 1/2 ton status

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    Anyone run into a loss of power problem on take off???? I was told by a fuel injection pump rebuilder that it could be the oil pressure switch cause it is also a fuel pump switch. Anyone had this problem and did it fix it????Thanks for any input...
     
  2. arveetek

    arveetek 1/2 ton status

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    Real common problem on the electronic 6.5L diesels.

    The oil pressure switch controls the low pressure fuel lift pump. When the switch stops working correctly, the fuel stops pumping.

    The low pressure lift pump is also known to fail.

    Third possibility is the PMD/FSD (pump mounted driver aka fuel solenoid driver) mounted on the DS4 injection pump. Again, very common.

    For more info, check out www.thedieselpage.com

    Casey
     
  3. ChevyDrivnRdneck

    ChevyDrivnRdneck 1/2 ton status

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    Well I changed the oil pressure switch after extensively looking for a socket long enough!!!! That seemed to be the problem. Truck runs better now then it has since I've owned it. Must have had the problem when I got it!!!!! It had some other problems right after I bought it too. The dealer had to replace the injection pump and a bunch of other things that they were guessing about!!!! Fuel cut-off solenoid, part of the fuel rail, the pump that is in the fuel line under the cab............Wonder if the switch was a majority of the problem all along????? They could have paid $20 instead of $2000!!!! /forums/images/graemlins/eek.gif /forums/images/graemlins/eek.gif /forums/images/graemlins/thumb.gif



    by the way........ Thanks!!!
     

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