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2005 chevy 6.6 duramax lly

Discussion in 'Chevy Trucks' started by MNcasper, Feb 7, 2014.

  1. MNcasper

    MNcasper Junior Member
    Messages: 26

    trying to help out my daughters b/f I don't know a lot about diesels so I I thought I would try the wisdom here (hope I'm doing this correctly, never started a thread) here's what he sent me.
    "I have a 2005 chevy 6.6 duramax lly the problem is that it has really no throttle response and takes at least quarter mile to get to 60 boost gauge says 5 psi went full throttle and power comes in and out and jump the truck forward and I have notice the whistle in the exhaust is gone but I can still hear the turbo it self is still spooling I have changed the fuel filter 3 time changed the vane turbo position sensor the air filter changed two turbo boots checked all turbo lines checked the turbo and all looks good i have looked around online people have said the map sensor could do that but I am not sure I'm starting to run out of ideas"

    anyone? thanks Keith
     
  2. larryhd

    larryhd Senior Member
    from vermont
    Messages: 213

    check all the rubber boots sounds like you are losing boost you could have a leak also check the intercooler you may have a leak there
    and make sure you pull all the boots off and look at them
     
    Last edited: Feb 8, 2014
  3. MNcasper

    MNcasper Junior Member
    Messages: 26

    thanks, I will pass that on. guess I need to learn diesels now :waving:
     
  4. BowTieDmax

    BowTieDmax Senior Member
    Messages: 152

    The vane positioner plate in the turbo is probably stuck. It's a round plate that has slots that adjust the vane paddles. Mine kinda rusted to the shaft in the turbo. The turbo has to come off then I just cleaned the rust off and all was well
     
  5. BowTieDmax

    BowTieDmax Senior Member
    Messages: 152

    So what was ever found to be the problem?
     
  6. MNcasper

    MNcasper Junior Member
    Messages: 26

    Sorry for lack of response, I know the turbo was stuck and he pulled it off and repaired it. Put it back together and seemed to work fine for a few days. I don't recall the exact misstep he made (will have to ask him again) but I believe it over boosted or over fueled and toasted the engine. Again I will have to ask him again. Again sorry for my tardiness, he hasn't wanted to talk about it and I put it out of my mind. I will let you know on both issues. Thanks Keith,
     
  7. BowTieDmax

    BowTieDmax Senior Member
    Messages: 152

    Just wondering. I figured the vane plate was stuck. Not sure what happened after that