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Thread: Egr blanking plates fitted

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    Default Egr blanking plates fitted

    Have had a few days off so decided to make up the blanking plates for the egr valve.

    So fitted both (square one on inlet and other oval one) now for some reason I've lost my low down power and seems to be worse? No fault codes as of yet!?

    Any ideas or has this happend to anyone else when doing it?

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    Regular Member rockafella8587's Avatar
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    Have you had it mapped out of the ecu?

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    Regular Member dahmich's Avatar
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    what engine you running??

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    No not been mapped out. It's a 1.9 cdti

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    Regular Member nutron's Avatar
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    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

    Year : Nosey

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    You may well have a poor seal on one or both of the blanking plates and be losing exhaust gas pressure from before the turbine. That would result in a much slower and later spool up.

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    That could possibly make sence. Thank you

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    Regular Member Dan_BlackSRi's Avatar
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    Vehicle : Vectra SRi

    Trim : XP NAV

    Engine : 1.9 CDTi 150

    Year : 2007

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    Quote Originally Posted by nige87 View Post
    That could possibly make sence. Thank you
    Watch what you're doing with the 4 bolts for the EGR (onto inlet manifold) these can be easily over tightened and strip the threads.

    Do you have issues with the EGR unit itself? Wonder why you fitted the square one too..?

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    Regular Member nutron's Avatar
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    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

    Year : Nosey

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    Obviously if the square one were leaking it would be boost pressure you were losing.

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    My view, and not to say I am correct but why do we need to put blanking plates in? If you make the assumption that the EGR valve is sealing correctly, then electrically disconnect it i.e. let the EGR valve itself be the blanking plate. I replaced my EGR with a new one but very soon after, decided I did not want gas recirculation so I disconnected the electrical connector (eml light now on of course)
    I fully realise that by doing this, all the soot will accumulate within the EGR gas chamber but the same would be true if someone fitted a blanking plate to the manifold outlet of the EGR only (I note above that you have blanked both so the EGR will not suffer this).
    I just plan to exercise the EGR every 3 or 4 months by re-making the connection and running for a few weeks (and crucially on the lead up to MOT time. Time will tell.

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    Regular Member alcutler's Avatar
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    Vehicle : vectra c 1.9cdti 120 estate

    Trim : design



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    Quote Originally Posted by wickedwillie View Post
    My view, and not to say I am correct but why do we need to put blanking plates in? If you make the assumption that the EGR valve is sealing correctly, then electrically disconnect it i.e. let the EGR valve itself be the blanking plate. I replaced my EGR with a new one but very soon after, decided I did not want gas recirculation so I disconnected the electrical connector (eml light now on of course)
    I fully realise that by doing this, all the soot will accumulate within the EGR gas chamber but the same would be true if someone fitted a blanking plate to the manifold outlet of the EGR only (I note above that you have blanked both so the EGR will not suffer this).
    I just plan to exercise the EGR every 3 or 4 months by re-making the connection and running for a few weeks (and crucially on the lead up to MOT time. Time will tell.
    Good points - by putting two blanks in you increase the chances of getting an air leak - the blanks are really only required if the EGR valve is faulty and stuck in one position - if it is working ok and sealing you can just disconnect it and it has the effect of blanking it off but needs to be mapped out to remove the warning light. If you can live with the light thats fine. Personally I have blanked mine off with the Fiat type plate which partially blocks the valve and after several months use is as clean as a whistle and the car runs well.

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