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  • Whine from transfer case

    Hi All,

    I have a 2012 Diesel 150 auto and there is a very noticeable whine coming from the transfer case (pretty sure that's where it is from anyway). It's only while accelerating with the box under load and a soon as I come off the throttle it goes away. Kind of changes pitch when the revs change too after it changes gear. When I got the Prado checked over by a mechanic he said he couldn't really hear it (old guy, must be deaf!) and another mechanic in his shop said he reckons it's transfer case related. Anyone have any ideas how I can fix it because it does not sound normal to me even though the mechanic said it drives perfectly. Can take a video if that will help.

    Cheers,
    Rimsy.

  • #2
    You haven't left it in 4WD locked have you?
    Greg - 08 D4D Prado,
    Some trips done - Cape York, Fraser Island, Simpson Desert / Central Aust, Vic High Country.

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    • #3
      Hi Corigator,

      Nope, centre diff lock not engaged as the light on the dash is off. Unless it's faulty and is engaged with no light on the dash.

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      • #4
        Update. So it turns out the whine is from the variable vane turbo and not from the transfer case. Mechanic says this is normal. Kizbot has same noise and replacing the turbo does not fix it so I'll just have to live with it.

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        • #5
          Rimsy. I can confirm the noise is apparently normal although mine only makes the noise once the vehicle is warm if this is the same as yours?

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          • #6
            Hi Kizbot. I can't really hear it when the engine is cold but that might just be because the engine is a little noisier when it's cold. It becomes very noticeable once the engine is warm though.

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