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Thread: 1.9 CDTI 120 Hesitation Judder.

  1. #1
    Regular Member CDTI120SXI's Avatar
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    Default 1.9 CDTI 120 Hesitation Judder.

    At the end of my tether with this car.
    80k on the clock.

    Cruising along at 1500-2500rpm ish keeping a constant speed, when i accelerate the car seems to slow for a brief second and then pick up.

    I've read up loads of topics here about all the possible causes but there are no definite fixes and i don't want to star throwing money at it for things it doesn't need.

    Would anyone be kind enough to share how they fixed their's?

    EGR valve is new ive checked what i think are the boost pipes

    What other cheap things to do? and are there any guides how to do them on the 120?


    Thanks in Advanced

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    check around the vac system for splits etc & try a shot of fuel system cleaner followed by a good thrapping

  3. #3
    VIP-Member Damo77's Avatar
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    Vehicle : Vectra

    Trim : SRi

    Engine : 1.9 CDTi 8v

    Year : 55

    Mileage : 92,000

    Default

    When I replaced my EGR I was told that I needed a software upgrade (at vauxhall) as the new EGR's function slightly differently. There is a field remedy issued covering this. Will see if I can find the post about it, but on phone at minute. Not completely sorted mine but it is no where near as bad as it was when I first got it running ;-)

    If you bear with me I'll see if I can find the post about the remedy. hopefully that may point you in the right direction
    Already replaced:-
    Alternator,
    Drilled/Grooved Discs & Pads, Eibach Springs, EGR Valve, 50W HID's 6000k, K&N Panel Filter, LED footwell & boot lights

  4. #4
    VIP-Member Damo77's Avatar
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    Vehicle : Vectra

    Trim : SRi

    Engine : 1.9 CDTi 8v

    Year : 55

    Mileage : 92,000

    Default

    Here you go chap:-

    http://www.vectra-c.com/forum/showthread.php?t=118113

    I still get a bit of surging when at medium throttle (you can hear the EGR open/close, almost fluttering open and closed in quick succession) which causes the car to hesitate/jerk

    Hope that may help you out
    Last edited by Damo77; 15th May 2011 at 13:01.
    Already replaced:-
    Alternator,
    Drilled/Grooved Discs & Pads, Eibach Springs, EGR Valve, 50W HID's 6000k, K&N Panel Filter, LED footwell & boot lights

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    Regular Member Ginge7289's Avatar
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    Cheers for the link, I have this problem, however it has only just started doing it. How can a software update fix it???

  6. #6
    VIP-Member Damo77's Avatar
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    Vehicle : Vectra

    Trim : SRi

    Engine : 1.9 CDTi 8v

    Year : 55

    Mileage : 92,000

    Default

    I honestly have no clue Ginge lol.

    As previously mentioned though, its not completley sorted out the surging/jerking but has made quite an improvement from how it was when the EGR was first installed
    Already replaced:-
    Alternator,
    Drilled/Grooved Discs & Pads, Eibach Springs, EGR Valve, 50W HID's 6000k, K&N Panel Filter, LED footwell & boot lights

  7. #7
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    You could try cleaning the boost sensor, this can cause the problems your having.

  8. #8
    Regular Member CDTI120SXI's Avatar
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    Quote Originally Posted by dh.dti View Post
    check around the vac system for splits etc & try a shot of fuel system cleaner followed by a good thrapping
    check vac system I'm going to take the pipes off make sure they are properly sealed. Cheers

    Quote Originally Posted by Damo77 View Post
    Here you go chap:-

    http://www.vectra-c.com/forum/showthread.php?t=118113

    I still get a bit of surging when at medium throttle (you can hear the EGR open/close, almost fluttering open and closed in quick succession) which causes the car to hesitate/jerk

    Hope that may help you out
    It was serviced at vauxhall 2k miles ago ill take it back make sure the newest software is on. Thanks

    Quote Originally Posted by st2malo View Post
    You could try cleaning the boost sensor, this can cause the problems your having.
    Gunna go whip that off now its at the back of the block?

  9. #9
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    Vehicle : Vectra C

    Trim : SRI With a few added extras

    Engine : 1.9 CDTI 120

    Year : 06

    Default

    Quote Originally Posted by CDTI120SXI View Post
    check vac system I'm going to take the pipes off make sure they are properly sealed. Cheers



    It was serviced at vauxhall 2k miles ago ill take it back make sure the newest software is on. Thanks



    Gunna go whip that off now its at the back of the block?
    yep, right behind the EGR valve, iirc but in the middle at the back.

  10. #10
    Regular Member CDTI120SXI's Avatar
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    Quote Originally Posted by phil-h View Post
    yep, right behind the EGR valve, iirc but in the middle at the back.
    found it, hanks need egr valve needs to come off unless i fine some sort of stubby torx key. might aswell check the EGR valve is clean.

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