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NOOB! 2.0TDI turbo.....

Discussion in 'A3/S3/Sportback (8P Chassis)' started by peircey, Mar 10, 2011.

  1. peircey
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    peircey New Member

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    [Mar 10, 2011]
    HI!

    just bought a 2004 a3 2.0 tdi....... im new to the turbo diesel world lol and was wondering about certain noises coming from the engine lol

    right........ when the engine is around 1900-2100rpm..... there is a high pitch whistle/hiss coming from the engine? is the turbo acting normal or something wrong with the turbo... i cant really hear after 3000 rpm..... it also makes this sound when i take my foot off the accelerator at around the same RPM too like a dump valve lol but very high pitched and i know diesels dont have dump valve..... is it just the sound of the turbo slowing down as i take my foot off the gas?......

    im hoping my turbo isnt fcuked its only done 43000 miles..... :S

    am i worrying about nothing or worrying about something!

    fanx

    chris
    #1
  2. micasb
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    micasb Member

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    [Mar 11, 2011]
    Can you somehow do a small clip so we can ear theat sound?
    It would help us helping you :)
    #2
  3. zedzo
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    zedzo Member

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    [Mar 11, 2011]
    changing gear jus bfore the power kicks in 18 - 20 does cause a dump on any turbo car.
    #3
  4. SimonAshley
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    SimonAshley Member

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    [Mar 11, 2011]
    #4
  5. RU55SSO
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    RU55SSO Member

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    [Mar 11, 2011]
    this noise is the impellor building boost. Every turbo does it and it in no way means your turbo is failing. Its completely normal a leaky boost pipe will hiss. (One of mine blew up and i just fixed it )
    #5

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