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Hissing noise in the background

danilotto Apr 22, 2014

  1. danilotto

    danilotto Active Member Audi S3

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    Hi all,

    Just to know if it is the same on your S3s...

    I notice a slight background hissing noise when the car moves from standstill. It is not the turbo spinning, it reminds me the noise of a brake pad creeping on the disk or the butcher's slicing machine lol.

    Did you notice it?
     
  2. BigD289

    BigD289 Member

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    Fan on your amplifier? Check under the passengers seat.
     
  3. BigD289

    BigD289 Member

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    For RHD models!
     
  4. JohnM100

    JohnM100 #teamSepang VCDS Map User Gold Supporter

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  5. Scott

    Scott Well-Known Member

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    I get a noise but it's from idle too so not when I move off
     
  6. danilotto

    danilotto Active Member Audi S3

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    Sorry I did not understand.

    Nope, it is another thing. When I move from standstill (mine is S-Tronic) I hear in the background a slight hissing noise it is something like expanding gas noise when you switch on the A/C but it is not the A/C at all. It comes from the front.

    Maybe something related to the vacuum pump of the servo brake?
     
  7. veeeight

    veeeight I am a very pretty girl VCDS Map User Black Edition

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    Hi

    For the past 2 days, I have noticed a very similar noise. Like a quiet hissing, similar to when your aircon system is low on gas, and it is moving through the pipes.

    I can only hear this:
    In an indoor Multi storey car park
    It is very quiet
    Only when the steering wheel is turned to almost 1 full rotation
    It doesn't make the noise (or is very quiet) when the steering wheel is straight ahead
    So far I've only heard it at slow ish speeds


    Did you find out where the noise is coming from?
     
  8. 6audi6

    6audi6 Member

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    I have exactly the same issue between 1000-2000 rpm. There is already another thread as regards this 'metallic rustle' as previously mentioned. I'm not too sure this isn't one and the same to a varying degree?

    To be honest, unless it gets any louder, it doesn't unduly concern me. It may just be a trait of the car (I stand to be corrected). Mine goes back to the dealers next week to get the S tronic gearbox checked out. I will mention the noise and see what they say.
     
    Last edited: May 24, 2014
  9. veeeight

    veeeight I am a very pretty girl VCDS Map User Black Edition

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    On mine, this is a completely different sound to the metallic rustle/tinkling noise, which is the wastegate actuator rod.
     
  10. veeeight

    veeeight I am a very pretty girl VCDS Map User Black Edition

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  11. danilotto

    danilotto Active Member Audi S3

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    Uhm, I read the golf R thread and they write about a steered wheels situation. The hissing noise I noticed is constant also going straight. As louder as stronger is the acceleration, it is not related to engine revs and this make me think it is related to transmission and not to engine. It is like the brake pad rubbing against the disk.

    I had the car checked by two different Audi dealer. The first said that it could be related to the S-Tronic clutches, the other did not notice the noise (lol)

    It could be interesting to know if only S-Tronic experience this noise or also manual.

    EDIT: my big concern is that it could be the hissing noise: R Forum • View topic - R mk7 Turbo failure!
     
    Last edited: Jun 10, 2014

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