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  1. 12-10-2015 11:18 AM #1
    SS1LE02
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    2009 CTS-V, 2006 Silverado 4x4, 1967 Chevelle SS convertible
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    How to tell if turbo is going bad.

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    When I start it up I hear a whirring when it's cold. If I shut it off right away at this point the whirring noise continues for a second or two.

    Mods please move to the B5 section.
    Last edited by SS1LE02; 12-10-2015 at 11:24 AM. Reason: wrong section
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  2. 12-10-2015 12:29 PM #2
    reckless golfer
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    Milwaukee wi

    its the SAI "secondary air pump" not the turbo
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  3. 12-28-2015 06:31 AM #3
    Seinsmeld13
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    2020 Porsche Spyder
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    Niagara Region, Canada

    I suggest you take it to the dealer for a look. Good luck.
    2018 RS5 2020 SLC 300
    Weekend and summer drive 2020 Porsche Cayman Spyder
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