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Thread: 1.9 cdti turbo whistle?

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    Default 1.9 cdti turbo whistle?

    ive just bought a 2004 vectra 1.9 cdti and when idling and revving up to 1500-2000 ish rpm it has a distinct whistle coming from the turbo area which increases with revs until 2000 ish then sounds normal, is this normal? it sometimes doesnt do it at all and i dont really understand why

    any help will be appreciated. thanks

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    Regular Member badback's Avatar
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    Mine only does it when the engine is started from cold, stops after a few minutes.

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    Vehicle : Jaguar XF 3.0D V6

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    Leak in exhaust pipe?

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    My Astra did that all the time, sounded very like a police siren. Moreso after the remap.

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    Regular Member mattolly86's Avatar
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    mine does it lol vectra cdti's do that

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    I had a whistle, it was loud, more like a scream really, more than the normal whistle you get from turbo, cos of course, the turbo on the veccy sounds lush when its working.

    I had this a few months ago, took it in to garage and on checking they found some blackening to the engine (sutt) around the under side of the turbo - they said that there is possibly a hair line fracture in the exhaust of the turbo and that that is probably where the whistle is coming from. they didn't get to have a good look at it though

    It has since stopped - i reckon, probably just a build up of sutt etc

    i have had no performance problems from the car to be honest so until it goes completely i'm not folking out £500-800 for a new one!!

    good luck

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    Regular Member AntSSSS's Avatar
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    Vehicle : Vectra Estate

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    Engine : CDTI 150 (Z19 DTH)

    Year : 2008

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    quite normal for a turbo to give a siren type noise until its in positive boost... Its all due to the vacume preasure in the compressor housing.. Nothing to worry about if your not loosing boost etc..

    Its also more noticable on turbo's with a smaller compressor... i.e. the diesel turbo's.

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    Regular Member big rich's Avatar
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    Vehicle : Vectra gsi

    Trim : Full heated leather

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    mine does it, and a nice chatter out of the air box at certain revs

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    Regular Member MattW's Avatar
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    Quote Originally Posted by big rich View Post
    mine does it, and a nice chatter out of the air box at certain revs
    I get that as well, and it's even more noticible since fitting the Simota kit

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    ahhh...its good to hear, i'll keep me ear to the forum on this one just in case....

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