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  • Users: jwb7
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  1. J

    Hissing sound when accelerating

    Took my A4 to an Audi mechanic yesterday and he says it's normal turbo noise,, well pleased as I thought major expense on the way
  2. J

    my air con makes a hissing noise-does yours

    Hi mate my a4 tdi that i just got does the same, i took it to the garage to be looked at and he said it's normal on most Audi's
  3. J

    Hissing sound when accelerating

    Hi Just got an A4 1.9 tdi 98 s plate and i too have this ****** anoying high pitched whining noise, and when I remove the small pipe from the vacuum unit it stops, anybody replaced this N75 valve there talking about and did it stop the noise? I have checked the turbo fan and there doesn't seem...