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Thread: Throttle Body help 1.8 16v (Z18XE)

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    Regular Member mickydoos's Avatar
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    Default Throttle Body help 1.8 16v (Z18XE)

    Hi guys,

    I removed my throttle body today and gave it a good ol' clean.

    But can anybody tell me what this pipe does?throttle.jpg

    I ask because mine is completely blocked between the inner body and the metal tube (not the rubber tube itself). I know there is a tiny hole into the throttle but its seems blocked from that side too?

    Car runs fine but I'm wondering if I need to be concerned?

    I've looked everywhere but can find a simple diagram explaining what all the pipes are! (top are obviously coolant)

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    engine vent hose. others are preheater hose apparently

    Apparently it can cause symptoms that can be attributed to the EGR

    http://zafiradiy.weebly.com/throttle-body-remove.html
    Last edited by jamesmcuk; 13th September 2012 at 20:36.

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    Regular Member paz_badboy4life's Avatar
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    Vehicle : Vectra SRi Dual Fuel NAV

    Trim : PreFace SRi

    Engine : 1.8 LPG

    Year : 53

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    How hard is it to remove mate? I've got an electrical malfunction on mine & it needs replacing.

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    Regular Member mickydoos's Avatar
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    It's pretty easy.

    This guide is for an Astra but same engine so its works both ways
    http://www.astraownersclub.com/vb/sh...d.php?t=213566

    You'll need a few tools:

    Wide pliers - to undo the hoses
    Decent socket set - 7mm socket is for the intake pipe, to remove the throttle body's bolts its actually a E10 torx but a 6 or 7mm (iirc) socket will do.
    T27 or T30 torx - you'll need to remove the engine cover, the guide doesnt say so but you need to
    lots of rags
    carb cleaner

    Does look like I'll have to pull it off again to clear that blockage. Nothing would go through it lol
    Last edited by mickydoos; 13th September 2012 at 21:21.

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