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Thread: Sluggish V6CDTi

  1. #1
    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

    Default Sluggish V6CDTi

    My car is being particularly sluggish under 2000rpm lately. It pulls well over 2000, but it's not as lively as it was before.

    Mind you, it's done over 155.000miles...

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    Time for a good service, fuel system cleaner (millers or similar) & a good old Italian tune down the nearest mway...


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    Regular Member Tadpole's Avatar
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    Don't throw any more money at it time to think about a change .........

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    Regular Member Sean-2.2Direct's Avatar
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    Quote Originally Posted by Tadpole View Post
    Don't throw any more money at it time to think about a change .........

    how do you figure that?

  5. #5
    Regular Member Tadpole's Avatar
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    There comes a time ............... I've done it .................

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    HI as I have said before if it is sluggish below 2000 then get you turbo cleaned out the vains are sticking together that will cause this. it is a variable vain turbo if the vains clog up it causes boost pressure problem tickover problem throttle problems and more because it is vacume and electric.

  7. #7
    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

    Default

    It's had a nice service not so long ago. I'm not using any fuel system cleaner and never will again either...that resulted in serious misfiring and poor coldstarts.


    Tadpole I'm trading it in for a newer V6CDTi with 90k and warranty soon anyway

    sb1uk I still can't quite understand the concept of a variable vane turbo with sticking vains...wouldn't it be rubbish in performance all the time then? Fuel economy is more than good, it's not smoking much thanks to the new EGR...

  8. #8
    Regular Member Tadpole's Avatar
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    Hope you get this sorted first, then sounds a good idea don't forget the pics ..... ..............

  9. #9
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    Quote Originally Posted by Celes View Post
    It's had a nice service not so long ago. I'm not using any fuel system cleaner and never will again either...that resulted in serious misfiring and poor coldstarts.


    Tadpole I'm trading it in for a newer V6CDTi with 90k and warranty soon anyway

    sb1uk I still can't quite understand the concept of a variable vane turbo with sticking vains...wouldn't it be rubbish in performance all the time then? Fuel economy is more than good, it's not smoking much thanks to the new EGR...


    No mine had throttle problems and boost pressure problms but when you floored it it went like mad. As soo as I had turbo cleaned by Turbo technics all problems went including missfire at 1500rpm.

  10. #10
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    Variable vane turbos are intended to reduce lag, if the variable element isn't working because it's sticking - you're going to experience lag.

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