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Strange 'Jet Engine' noise on first start up...

spuddie007 Jan 2, 2008

  1. spuddie007

    spuddie007 Thomas the Tank Engine - Choo, Choo!

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    Hey guys/gals

    Not sure if anyone has experienced a loud high pitched 'jet engine' sounding noise ocassionally on the S3 just after start-up?

    Any ideas what it may be be? It goes after a couple of minutes, as I'm selling the car very soon, wanna get it fixed before selling on.

    Any ideas gratefully received.....

    Spuddie :)
     
  2. god_thats_quick

    god_thats_quick Numptie of the highest order

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    Might be the secondary air pump, but there's a number of things it could be so tiss rather hard to tell :detective2:
     
  3. golf

    golf ***** rent boy VCDS Map User

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    That'll be the Secondary Air Pump, it's just doing its job, it's nothing to be concerned about.
     
  4. spuddie007

    spuddie007 Thomas the Tank Engine - Choo, Choo!

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    Sweet.......it is only intermittant, some days it's audible, some it's not :)
     
  5. danclarke

    danclarke 2001 Denim Blue S3 Rep

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    mine makes the same noise always wondered what it was? it only stays on for about 15 seconds tho? what is the secondary pump for?
     
  6. spuddie007

    spuddie007 Thomas the Tank Engine - Choo, Choo!

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    Love the colour of your car mate!!
     
  7. SamDude

    SamDude Active Member

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    Is it the turbine? (ala KITT)
     
  8. HTC

    HTC Active Member

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    It pumps air into the exhaust system during cold starts to heat up the cat quickly and get it working on those emissions.
     

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