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Thread: PO403 - EGR solenoid

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    Better than that "other" place Not Verified Feedback Score 2 (100%) x2xtreme360's Avatar
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    PO403 - EGR solenoid

    Does anyone know what the differences are between the 94-95 EGR solenoids and 96+? Obviously, the 94-95 solenoids have only 2 ports on them, whereas the 96+ have 3 ports. I believe that my 97 actually has a 94-95 solenoid, because it only has 2 ports on it. Of course, I get a CEL for a faulty solenoid.

    Vacuum reduction, Powdercoated misc, cruise relocate, Evo9 BOV, Custom catch cans, Russell fuel filter, SS braided fuel lines, High flow fuel loop, Autogage fuel gauge, Catless DP, DNP Y-pipe, Fuel pump hotwire.

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    Subscribed... I just deleted the egr on my 97 vr4 and am getting the same CEL. Do you know of any tricks that might make this go away? I have played with running the vacuum lines in different configurations but it also throws the code eventually. I tried following oohnoo's method but it didn't work for me.

    Thanks, John

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    Better than that "other" place Not Verified Feedback Score 2 (100%) x2xtreme360's Avatar
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    There's no way around it. You'll need to put it back in. My issue is that my solenoid appears to be from a hybrid car, and I don't know if they are compatible.

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    SoSoCal verified Feedback Score 1 (100%) DuTTch's Avatar
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    I hated all those check engine lights , thats why I went 95 ecu lol, all gone. Its like a miracle. I have a a 95 and 96 solenoids (the same I beleive), complete sets. PM hydedw on 3si he found out some interesting stuff on the differences on the 97

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    Better than that "other" place Not Verified Feedback Score 2 (100%) x2xtreme360's Avatar
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    I use a 95 ECU for everything too.... except inspection

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    Sorry I have done any research yet... but how hard is it to switch over to a 95 ecu?

    Thanks, John

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    SoSoCal verified Feedback Score 1 (100%) DuTTch's Avatar
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    plug and play

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    Quote Originally Posted by DuTTch View Post
    plug and play
    Not completely. Almost plug and play by like, 8 pins. The car WILL start with no modification though.

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    SoSoCal verified Feedback Score 1 (100%) DuTTch's Avatar
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    Quote Originally Posted by x2xtreme360 View Post
    Not completely. Almost plug and play by like, 8 pins. The car WILL start with no modification though.
    There was never any modifications made to my harnass and it ran just fine.

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    Quote Originally Posted by DuTTch View Post
    There was never any modifications made to my harnass and it ran just fine.
    Yea, it runs fine with no modification. There are a few pin differences between the 94-95 and 96+ ECU's though.

    The engine load pin, turbo meter, O2 heaters, and a few others.

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