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turbo hissing noisy

Discussion in 'Diesel forum' started by gewagon, Jul 26, 2010.

  1. gewagon
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    gewagon New Member

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    Hi I have an Audi 1.9tdi 05 driving it the other day heard a slight pop and then the turbo has a loud whining/hissing noise , when I took of the wastegate acuator pipe (vacume) the noise stopped but lack of turbo power when I put the pipe back on I had full turbo power but the whining turbo spinning noise like the wastegate is constantly open , could this be the N75 Solinoid valve or an air leak somewhere I dont think the turbo is at fault as it is not rumbling or rattleling or like a bearing whine just the spinning noise of the turbo ? :sadlike:
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  2. reggieroo
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    reggieroo Member

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    Our allroad has a slight whistling sound from the turbo & wondered if this was normal.
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  3. swarcup
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    swarcup Well-Known Member

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    if you heard a poping noise before the hissing i would say that you need to be looking for a pipe that has come off or split.
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  4. alictait
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    alictait Member

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    Did u figure out your problem exactly the same thing happened to me tonight ? I thought I had actuall blown a tyre and then lost most power and car went into limp mode :(
    #4
  5. alictait
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    alictait Member

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    Mine turned out to be the intercooler, just posting incase anyone stumbles across the thread looking for answers.
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