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Thread: Possible turbo bearing screech HELP!!

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    SkippyGU JackCollo's Avatar
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    Possible turbo bearing screech HELP!!

    Hi guys
    I have a 2000 GUII Patrol ZD30 auto and I'm having some trouble with a noise that sounds like it's coming from the turbo. It happens when the car is under boost and acceleration generally above 2000 rpm it sounds like really bad belt screech. I've read that it might be gaskets but I don't know. When I bought the car it made the noise for a while then it kind of faded away and the other day I put a boost controller on it and since then it has been making the noise.
    Has this happened to any of you if so what was wrong.

    Really hoping it's something small like a gasket or maybe the egr.
    Any input is greatly appreciated
    Cheers Jack

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    Legendary 4bye4's Avatar
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    D'day mate, having just had this happen on a Merc Vito work van, I suggest you get it looked at as quickly as possible. It may just be sucking air somwhere but if the bearing is about to fail, the resulting disintegration can do heaps of bad thing to the motor hope it is a laek somewhere.
    2005 GU IV ST 3.0. Snorkel. Roof rack. Awning. Spots. Welded I/C. Dual batteries & VSR. UHF. Barn door hinge extension. Roof top spot lights. Rear drawers. 2" lift. NADS. EGT and boost gauges. Trans temp and water temp gauges. Provent 200 catch can. Rear ladder


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    Administrator AB's Avatar
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    Have you noticed any decrease in power when this started?

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    SkippyGU JackCollo's Avatar
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    Since I've owned the car it hasn't really changed. Only had a power increase since putting the boost controller on. And I haven't noticed any loss in power.

    Not sure if the guy before has loss of power though

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    SkippyGU JackCollo's Avatar
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    It doesn't lack on power when it is screeching. I took it to a mechanic and he says it's the turbo but to be honest with you I don't really wanna fork out 2500 or so for a new turbo I wanna try everything else first

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    Patrol Guru Irish's Avatar
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    Quote Originally Posted by JackCollo View Post
    It doesn't lack on power when it is screeching. I took it to a mechanic and he says it's the turbo but to be honest with you I don't really wanna fork out 2500 or so for a new turbo I wanna try everything else first
    Could it possibly be the turbo?

    J/K

    You say it's only started since you put the boost controller on it, how much extra boost are you flowing with the boost controller? You might be pushing your turbo beyond it's safe working limits.

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    Patrol Freak BillsGU's Avatar
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    Could be just air leaking from the IC or bad hose connections between the turbo, IC and engine intake. Tighten all your hose clamps (the clamp at the turbo output is especially difficult to tighten) and look for oil weaping around the intercooler, which indicates leaks.

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    SkippyGU JackCollo's Avatar
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    All the hose clamps are tight and the ic isn't leaking. The noise is coming almost exclusively from the turbo.

    Any other ideas

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    Administrator AB's Avatar
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    Quote Originally Posted by JackCollo View Post
    All the hose clamps are tight and the ic isn't leaking. The noise is coming almost exclusively from the turbo.

    Any other ideas
    Take the inlet hose off from the airbox to the turbo compressor and feel if the shaft of the turbine has play and also inspect it.

    Take a good photo even and put it on here.

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    SkippyGU JackCollo's Avatar
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    Alright will do

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