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Turbo Whistle

Discussion in 'A4/S4 forum(B5 Chassis)' started by ScottD3, Apr 18, 2011.

  1. ScottD3
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    ScottD3 I want your faulty electronics

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    When I got my 1.9 TDI (AFN) I could hear the turbo whistle really loudly but over the months it got really quiet, now its starting to come back.

    Are you meant to hear it or not?

    Could someone please explaine it?
    Thanks.
    #1
  2. rossbrownlee
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    rossbrownlee Ross_S4

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    Bump for this, I can also hear mine now whereas I couldn't before, and would be interested to know if you should or not.
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  3. Westy
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    Westy Double Dark Side! Diesel & 8P

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    I'm sure when mine was standard it was very quiet. With a modded airbox and remap it has got louder. Has your turbo got louder then quieter then louder again without any mods???
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  4. ScottD3
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    ScottD3 I want your faulty electronics

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    mine has.
    It was loud when I got it, so loud my mate could hear it in his car be hind me.

    it went away for a couple of months but its come back. its quieter than before though.
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  5. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    probably a leak?
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  6. Arrkon
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    Arrkon Midlands regional Moderator

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    check all the hoses leading out of the turbo, through the IC and upto the inlet... if theres al leak, thats the area most likely to be causing a whistling noise.
    #6
  7. ScottD3
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    ScottD3 I want your faulty electronics

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    I checked all pipes, tubes, cables.
    I removed alot of the smaller pipe work and all the main hoses are fine, No issues.
    #7
  8. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator

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    Try pressure testing the inlet system.

    May be a split intercooler or a hard to see hose split for instance.
    #8

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