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Thread: Let's see if you can diagnose this - Judder 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 Let's see if you can diagnose this - Judder V6CDTi

    Recently got my Signum back and on the way home I noticed severe juddering going up a hill on the motorway doing...some mph.
    To be exact the judder was felt even on flat surface or going downhill, but always under a bit of load. The judder disappeared as soon as I lifted my foot off the loud pedal.
    The engine was turning about 1500-2500 times per minute in sixth gear...didn't go much faster really so the juddering could be higher up the revs too.

    The car has 103k ON THE CLOCK...genuine miles are only known to god.

    Won't reveal my diagnosis on this yet Open to suggestions

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    Hi,
    Sounds like how my problem started, still not fully diagnosed, but myself and the Vauxhall technician at the dealers both reckon its SCVs (or technician reckons it could be EGR at some of the symptoms apply to both failing)

  3. #3
    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

    Trim : LE/VXR

    Engine : 2.0 cdti/1.6 Turbo

    Year : 13/07

    Default

    DMF?

  4. #4
    Regular Member signumturbo04's Avatar
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    my signum used to judder under load. its a 2.0t petrol but turned out just to be worn inner cv joints.

  5. #5
    Ex Vec-C Admin Ian-Highlander's Avatar
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    Vehicle : Insignia Tourer

    Trim : Elite

    Engine : 2.0 CDTI (160ps)

    Year : 2010

    Default

    Drive shafts out of balance or CV joints would be my guess with those symptoms.
    "Doing a good job here is like wetting your pants in a dark suit, you get a warm feeling but nobody else notices"
    Maptun Tuned 2.0T Estate - click HERE for mods list.
    Brentwood 2012: Winner, Saturday Show. Hull 2012: Winner, Best Estate. Hull 2013: Winner, Best Estate & Runner Up, Best I.C.E

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    Regular Member P3tchy's Avatar
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    DMF and/or clutch. Mines doing the same.

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

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

    Default

    Quote Originally Posted by signumturbo04 View Post
    my signum used to judder under load. its a 2.0t petrol but turned out just to be worn inner cv joints.

    CV joints are my guess too For now I'll just re-grease them but replace at a later time

    How much were they for the 2.0T mate?


    Should point out that the juddering got much better with new tires

  8. #8
    Regular Member signumturbo04's Avatar
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    i got 2 full shafts for £160 inc vat. if you have the f40 box like mines the shafts are both identical as they have equal length shafts on them.

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    I was just about to post up about a judder on my 04 y30dt Signum when I saw this thread.

    I too have a judder, but mine's quite specific. It happens at around 50mph, under light load, and only in fifth gear.

    Is this a similar problem?

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