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Thread: turbo whooshing noise (not normal)

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    Default turbo whooshing noise (not normal)

    hi all my vec c 120 is making one hell of a whooosh noise at 2000 revs onwards until turbo stops spooling ive no black smoke from exhaust i dont feel the car has lost power but the noise sounds horenduss,
    ive looked under bonnet but cant see any split hoses, it sounds like pressurised air being pushed from somewhere but it must be after the turbo because of no lack of power
    anyone had this problem before?

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    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

    Default

    I had something similar on our 2.2DTi. It had a split hose down at the intercooler. VERY hard to spot
    Sounded like a Subaru Impreza

    EDIT: we did have a lot of smoke though...

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    confused

    im going to have a look now space is a bit tight in there though ill get back if i can see anything

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    Regular Member mattv6diesel's Avatar
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    Vehicle : Bmw 330d

    Trim : Msport

    Engine : 3.0d

    Year : 2008

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    egr pipe from turbo has failed on a couple and leaks under the manifold you'll need hepl to rev and search

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    ref celles, regarding split hose was it a top hose or bottom hose, ive checked all the top hose just 2 hoses left to check under intercooler, thanks for your reply,
    ref new post egr pipe, would i feel air leaking from that pipe even though the turbo isnt kicked in as the turbo only seems to spool under load and not in neutral, i will try this after the two other hoses i have to check

    all these are helping please keep these suggestions coming

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    Regular Member mattv6diesel's Avatar
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    Vehicle : Bmw 330d

    Trim : Msport

    Engine : 3.0d

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    well their shouldn't be any leaks at all good luck mate

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    Regular Member BigWilko's Avatar
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    Vehicle : Signum

    Trim : Design

    Engine : 3.0 CDTI

    Year : 2005

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    Quote Originally Posted by robshortman View Post
    hi all my vec c 120 is making one hell of a whooosh noise at 2000 revs onwards until turbo stops spooling ive no black smoke from exhaust i dont feel the car has lost power but the noise sounds horenduss,
    ive looked under bonnet but cant see any split hoses, it sounds like pressurised air being pushed from somewhere but it must be after the turbo because of no lack of power
    anyone had this problem before?
    Hey mate i got EXACTLY the same. If i'm right in saying it doesn't do it when you just rev only when you're flooring it in gear, clutch up? Have you done the airbox mod? I wondered if it was a sucking noise in relation to that? i was thinking of putting the pipe back on. Also i can't hear it with the windows up. With it being sunny i had the windows down, thats when i first heard it. It could have been doing it since i bought it in december TBH.

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    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

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    Quote Originally Posted by robshortman View Post
    ref celles, regarding split hose was it a top hose or bottom hose, ive checked all the top hose just 2 hoses left to check under intercooler, thanks for your reply,


    Bottom hose mate Follow the turbo outlet to intercooler and you should spot it

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    rolleyes

    Quote Originally Posted by BigWilko View Post
    Hey mate i got EXACTLY the same. If i'm right in saying it doesn't do it when you just rev only when you're flooring it in gear, clutch up? Have you done the airbox mod? I wondered if it was a sucking noise in relation to that? i was thinking of putting the pipe back on. Also i can't hear it with the windows up. With it being sunny i had the windows down, thats when i first heard it. It could have been doing it since i bought it in december TBH.
    hi big wilko thanks for your intrest, this noise is definatly not normal only started happening bout 2 weeks ago im now going to check the hoses celle mentioned, the sound is very loud and i must drive slowly past young kids because im scarred its going to suck them up and spit them out the exhaust, what is the air box mod? i havent heard of this one

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    Regular Member BigWilko's Avatar
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    Vehicle : Signum

    Trim : Design

    Engine : 3.0 CDTI

    Year : 2005

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    Quote Originally Posted by robshortman View Post
    hi big wilko thanks for your intrest, this noise is definatly not normal only started happening bout 2 weeks ago im now going to check the hoses celle mentioned, the sound is very loud and i must drive slowly past young kids because im scarred its going to suck them up and spit them out the exhaust, what is the air box mod? i havent heard of this one
    From what i can understand the construction of the airbox is somewhat restrictive. Under the air filter is a removable bit of pipe. Unclip & remove it. This makes the airflow less restricted i.e. using the full panel rather than just 1/2 the filter. Winner. +2 or 3 bhp

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