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Thread: unknown valve

  1. #1
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    Default unknown valve

    Hi my 3.0cdti y30dt had a small green plastic valve connected between what I think is a solenoid and the main engine I have a picture in the link. The problem is when replacing the pipe it broke so the pipe was fitted without it. The car goes fine until you give it the welly then the spanner comes on and limp mode. When I disconnect the pipe I hear like a vac release and upon restarting the spanner has gone. Can anybody tell me what this green valve is and a part number for a replacement?
    Regards and thanks,Ian.
    http://s1220.photobucket.com/albums/...ccyvalve-1.jpg

  2. #2
    North West Regional Organiser paulvectrac's Avatar
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    Vehicle : vectra

    Trim : vxr

    Engine : 2.8 v6 turbo

    Year : 2007

    Default

    Might be the boost sensor
    Vectra vxr custome remaps egr deletes dpf and diagnostic work all remaps are custome bench tuning avalible all genuine equipment PM for info

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    Default

    Thanks for the reply Paul, I cleaned the boost sensor it is under the engine cover to the back .at the time it was well gunked up. This is different

  4. #4
    Regular Member gtr1000's Avatar
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    Vehicle : Insignia

    Trim : Sri

    Engine : 140 Ecoflex S/S

    Year : 2013

    Default

    Just had a look at mine with the aid of a torch. Reluctant to remove it to see what's inside in case it breaks like yours did .

    Looks to me like a one way/non return type of thingy. With it off, can you blow down each end or just one way?

  5. #5
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    Default

    Hi,thanks for the reply. Mine you could blow through both ways but it may be damaged.

  6. #6
    Regular Member gtr1000's Avatar
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    Vehicle : Insignia

    Trim : Sri

    Engine : 140 Ecoflex S/S

    Year : 2013

    Default

    I think your best bet at this stage might be a trip to a VX parts dept and have a look at their microfiche. Get the part identified, get a price and then walk away and have a think what your next move will be.

    Might be worth just taking the old part in and seeing what they say. I can't imagine it was designed to flow both ways as what would be the point of a bit of plastic? As you've found out, the engine doesn't like it not being installed so it must serve a purpose.

    Keep us posted

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    Default

    Hi, did that already my local vx dealer could not find it on their system lol

  8. #8
    Regular Member Critch's Avatar
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    Vehicle : Mk1 renault scenic... I know I know but it drives

    Trim : Basic

    Engine : 1.6 16v

    Year : 2003

    Default

    Is it not a 1 way valve for the turbo actuator?

    Thing is with vx parts only as good as bloke behind desk plenty of times I've had people say can't find it we don't sell it separately etc etc. only to go to a different dealer an have another bloke find excactly what I'm looking for

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    Default

    Hi tried 2 different dealers even had car with me and showed them where it goes but to no avail I thinlk its the 3.0 izuzu engine stumps them.

  10. #10
    Regular Member Derek Mc's Avatar
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    Default

    Its a small non return valve on some kind of vacuum line to prevent the diaphragm reversing on itself under certain conditions (so am guessing) but think it will be boost or overboost sensing?

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