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Thread: Whistling Noise When Revving

  1. #1
    Regular Member Sean-2.2Direct's Avatar
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    Default Whistling Noise When Revving

    This is not my day for noises.

    I find after driving home from work about 10 mile down a motorway i pull up outside my house and when i rev the engine to about 2k and then let off the accelerator it makes a slight whistling noise as the revs drop.
    does anyone know what this is or have had this problem?

    My Car is a 2.2 Direct

  2. #2
    Regular Member Sean-2.2Direct's Avatar
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    Anyone??

  3. #3
    Regular Member Thunder's Avatar
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    Vehicle : Vectra C Facelift

    Trim : Elite

    Engine : CDTi 150

    Year : 2005

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    Sorry cant help you but free bump

    ps: could it just be the Alternator belt under load at this time of year

  4. #4
    Full Member neverlandandy's Avatar
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    Vehicle : Insignia Elite Nav

    Trim : Elite

    Engine : 2.0 cdti

    Year : 2012

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    could be a split boost hose as well

  5. #5
    Regular Member rushy's Avatar
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    Vehicle : SRi


    Engine : Z22SE (2.2 Petrol)

    Year : 2004

    Mileage : 137000

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    Quote Originally Posted by neverlandandy View Post
    could be a split boost hose as well
    Its a N/A mate, so no boost. Its most likely to be an air leak from the TB back inc vac hoses. If the revs sit just above 6000 at warm idle then there is no leak. It could also just be the revving lump trying to suck air through your closed TB. Just do the usual 2.2 maintenance job of cleaning your TB and i'll bet you be fine.

  6. #6
    Regular Member Sean-2.2Direct's Avatar
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    thanks for the Advice all of you will keep a eye out

  7. #7
    Regular Member rushy's Avatar
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    Vehicle : SRi


    Engine : Z22SE (2.2 Petrol)

    Year : 2004

    Mileage : 137000

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    Quote Originally Posted by rushy View Post
    Its a N/A mate, so no boost. Its most likely to be an air leak from the TB back inc vac hoses. If the revs sit just above 6000 at warm idle then there is no leak. It could also just be the revving lump trying to suck air through your closed TB. Just do the usual 2.2 maintenance job of cleaning your TB and i'll bet you be fine.
    I meant 600rpm

  8. #8
    Regular Member Sean-2.2Direct's Avatar
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    figured

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