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Thread: loud squeal around 2k rpm

  1. #1
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    Vehicle : Vectra

    Trim : Sri

    Engine : CDTi 150

    Year : 2004

    Mileage : 116k

    Default loud squeal around 2k rpm

    Hi guys SRi 150cdti owner here

    I was tootleing around town then when slowly accelerating back up to nsl I noticed this squeal, just get loud up to about 2k then stops again only on like 1/2 throttle kind of area. Any idea what that could be? doesn't need an oil change but I'm going to do one anyway.

    Thanks

  2. #2
    Forum Moderator soulman's Avatar
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    Vehicle : Vauxhall

    Trim : Astra Twin Top

    Engine : 1.9cdti

    Year : 07

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    possibility something caught in the dust guard on your brake .
    squeals like a pig and very loud .

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    Vehicle : Vectra

    Trim : Sri

    Engine : CDTi 150

    Year : 2004

    Mileage : 116k

    Default

    bump,

    any one have any other ideas? bit more info...

    This started the other night when only using 1/4 to 1/2 throttle (aka taking it easy) there's a rather loud and annoying squeak that comes from the engine (turbo?) At around 2k rpm and fades off after that, only does it when taking it easy and not when its getting thrashed

    Any one got any ideas what may be causing it? Oil level is fine and doesn't require a change but I'll do one anyway

    im worried its the turbo bearings to be honest car is on 103k

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    Have you checked the auxiliary belt isn't slipping and then squealing like a pig?

    Normally noticed when you blip the throttle.

  5. #5
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    Is your aircon on or off? If on, it may be the aircon.

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    Vehicle : Vectra

    Trim : Sri

    Engine : CDTi 150

    Year : 2004

    Mileage : 116k

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    belts arent slipping and it isnt the air con, only does it under load and its a very high pitch

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    Have a poke at the swirl flaps. If there's some vertical movement, boost can bleed off, possibly creating the squeal you describe.


    When was your manifold replaced - if it's still the original on 103K, good going ;-)


    I'd expect more of a hissing sound from a leak in any of the pipe-work.


    BB.
    Last edited by bb_cdti; 21st August 2012 at 13:24.

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