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Thread: Z20NET Spec Sheet

  1. #21
    VIP-Member Caveman_nige's Avatar
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    Vehicle : Insignia

    Trim : Elite

    Engine : 1.6T SIDI Petrol

    Year : 2014

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    Quote Originally Posted by matrix1979 View Post
    Does any body else have this issue with the vacuum pump (circled in red) tapping noises coming from it while the engines running can be heard clearly when u hold a screw driver to it and place ur ear to the end of the driver , Also if the vacuum pump is faulty would this have anything to do with me having my lumpy idleing issue i have ? So if people could please check there z20net vacuum pump to see if theres does the above or not ill appreciate it thanks mark .
    I will check mine to tonight once its warmed up and let you know..

  2. #22
    Regular Member matrix1979's Avatar
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    Cheers

  3. #23
    VIP-Member Caveman_nige's Avatar
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    Vehicle : Insignia

    Trim : Elite

    Engine : 1.6T SIDI Petrol

    Year : 2014

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    Oops missed that chnace to do that and am out and about now without it. If one of tye other guys can't check theirs tonight I will do mine tomorrow.

  4. #24
    Regular Member Delgado900's Avatar
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    What's the idleing RPM ?

  5. #25
    Regular Member matrix1979's Avatar
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    I'd say 800 to 850 but the needle is moving up and down slightly when the engine is idleing lumpy . What s the purpose of a vacuum pump exactly ? And would it have any affect on idling lumpy at all

  6. #26
    Regular Member matrix1979's Avatar
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    bump

  7. #27
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    Vacuum Pump is for your brake servo, in the dark and distant past with petrol carbureter engines you just used to tap off the vacuum from the inlet manifold, can't easily do that with modern engines so they use the same technique the diesel fraternity have always had in the shape of a dedicated vauum pump.

    SJ

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    Sorry only gave you half an answer, I believe the vacuum pump also operates various solenoids, so I suppose it is possible that a faulty pump may cause some other symptoms, how do your brakes feel when you apply them hard ?

    SJ

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    Regular Member J's Turbo's Avatar
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    Hi mate, you reckon you could source me a wiring diagram for the ecu for that engine z20net?
    Last edited by J's Turbo; 7th October 2011 at 18:58. Reason: !

  10. #30
    Regular Member matrix1979's Avatar
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    Quote Originally Posted by sjanisz View Post
    Sorry only gave you half an answer, I believe the vacuum pump also operates various solenoids, so I suppose it is possible that a faulty pump may cause some other symptoms, how do your brakes feel when you apply them hard ?

    SJ
    Not to bad but I suppose they do feel a bit weak on braking when applying it hard cheers for your info think I might just pop a new one on and see , looks easy to fit ?

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