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Thread: Poor performance from 1.9cdti....Check your boost pipes

  1. #301
    Regular Member yamman's Avatar
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    Vehicle : veccy 150

    Trim : sri

    Engine : z19dth

    Year : 2008

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    Old thread I know but seems as though my connections are different than others in pics I can see2020-02-27 14.20.32.jpg have just changed hoses. Anyone seen this connections before?

  2. #302
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    Vehicle : Signum


    Engine : 1.9 cdti

    Year : 2006

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    Quote Originally Posted by yamman View Post
    Old thread I know but seems as though my connections are different than others in pics I can see2020-02-27 14.20.32.jpg have just changed hoses. Anyone seen this connections before?
    I’ve got the same on my signum


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  3. #303
    Regular Member yamman's Avatar
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    Vehicle : veccy 150

    Trim : sri

    Engine : z19dth

    Year : 2008

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    Friend has just bought 2006 vectra z19dth last tuesday and his has the same connection as well so it's nothing different than others. We are going to try without that connection on his just straight 1 pipe see if any different

  4. #304
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    Vehicle : Signum


    Engine : 1.9 cdti

    Year : 2006

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    Quote Originally Posted by yamman View Post
    Friend has just bought 2006 vectra z19dth last tuesday and his has the same connection as well so it's nothing different than others. We are going to try without that connection on his just straight 1 pipe see if any different
    Let me know what happens please


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  5. #305
    Regular Member yamman's Avatar
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    Vehicle : veccy 150

    Trim : sri

    Engine : z19dth

    Year : 2008

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    Will be doing it this weekend along with other stuff. Will update when done and then after trip to Scotland on Monday so will be good test.

  6. #306
    Midlands - Vxr Owning Dick Dog_Book's Avatar
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    Vehicle : Vectra Estate

    Trim : VXR

    Engine : Z28NEH

    Year : 07

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    Quote Originally Posted by jasond.jd41 View Post
    Let me know what happens please


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    Nothing’s going to change other than the vac pipe being routed at angles that might kink it if the angles are too small.
    Vectra VXR estate 2007 Sapphire Black
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    Tech2 & MDI diagnostics + SPS

  7. #307
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    Vehicle : CDTi

    Trim : SRI

    Engine : Z19DTH

    Year : 2008

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    Mine cut out last night, put diag tool on and said low inlet pressure, cleared fault now working.

    My piping is the same as thread #301.

    Would a sensor cause this problem, or am I going to be cleaning stuff at weekend?
    Last edited by Mike_B_C; 30th June 2020 at 08:30.

  8. #308
    Regular Member yamman's Avatar
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    Vehicle : veccy 150

    Trim : sri

    Engine : z19dth

    Year : 2008

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    Been busy jasond but we put the pipe on without the bend etc just 1 loop pipe it made no difference at all no pics. Correct dog book (as usual) if you try to put pipe on short it kinked a little so we went longer with it. Bit to no difference. Was worth trying. Mike I'm sure 1 of the gurus will be along to help soon. I would start by cleaning egr throttle body pressure sensor in inlet. But I'm ocd for that

  9. #309
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    Vehicle : VECTRA C

    Trim : SRI

    Engine : 1.9cdti

    Year : 2007

    Mileage : 140000

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    No boost at all. Done so far - cleaned EGR, throtle body and boost sensor. Replaced glow plugs, vaccum pipes and used replacement swirl arm as original follen off. No any errors. Found some oil in throtle body while cleaning - not a lot. What else I can check?

  10. #310
    Regular Member northpole's Avatar
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    Vehicle : Vectra C

    Trim : SXI limited edition

    Engine : 2.0 16v DTI

    Year : 2003

    Mileage : 140000

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    Quote Originally Posted by keroz View Post
    No boost at all. Done so far - cleaned EGR, throtle body and boost sensor. Replaced glow plugs, vaccum pipes and used replacement swirl arm as original follen off. No any errors. Found some oil in throtle body while cleaning - not a lot. What else I can check?
    Clean the VNT mechism on the turbo... it's probably stuck

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