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1.9 cdti turbo noise

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  • 30-12-2014 8:39pm
    #1
    almostover
    Registered Users Posts: 1,985 ✭✭✭


    The turbo on my vectra 1.9 cdti is making a stance noise when cold. Its sounds almost like a screeching fan belt but the sound seems to be coming from the turbo and the fan belt was changed about 6 months ago. The screeching sound is only there when cold and disappears after 30 secs or so. The turbo is working fine as the engine pulls like a train and the engine is not using oil or there is no blue smoke from the exhaust. Ive had the car about 15k miles and its on 108 k now and ive changed the oil every 5k miles since ive bought it. Is the turbo on the way out?


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    #2
    almostover
    Registered Users Posts: 1,985 ✭✭✭almostover


    almostover wrote: »
    The turbo on my vectra 1.9 cdti is making a stance noise when cold. Its sounds almost like a screeching fan belt but the sound seems to be coming from the turbo and the fan belt was changed about 6 months ago. The screeching sound is only there when cold and disappears after 30 secs or so. The turbo is working fine as the engine pulls like a train and the engine is not using oil or there is no blue smoke from the exhaust. Ive had the car about 15k miles and its on 108 k now and ive changed the oil every 5k miles since ive bought it. Is the turbo on the way out?

    Bump


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    #3
    dgt
    Closed Accounts Posts: 12,985 ✭✭✭✭dgt


    Have you physically checked the turbo


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    #4
    visual
    Closed Accounts Posts: 3,268 ✭✭✭visual


    Pour a little water on the belt to see if the cold start noise changes or goes away.
    There is also a possibility a pulley is getting noisy

    You could place a big screw driver against the turbo housing and your ear to the handle end and compare when noise is present at cold starts and when engine is warm and noise is gone. I doubt it is turbo.


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    #5
    almostover
    Registered Users Posts: 1,985 ✭✭✭almostover


    Tested the alternator auxiliary belt yesterday and it's definitely not that. The bely looks new enough and it is tensioned properly. The sound is definitely coming from the turbo. Had the car up on axle stands yesterday to inspect the turbo and I couldn't see any thing untoward. There is no oil laking from the turbo and the oil feed and return pipes look OK


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