car surges when cold
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This is a discussion on car surges when cold within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; my 02 wrx surges when its not warmed up, ii have a engine back exhaust and a bov on that ...

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    car surges when cold

    my 02 wrx surges when its not warmed up, ii have a engine back exhaust and a bov on that i think may be causing, what do you guys think is the problem?
    Last edited by Twora; 06-16-2010 at 10:10 PM.

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    Registered User Skreekin's Avatar
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    What do you mean "engine back exhaust"? Cat back? Turbo back?

    Get the stock replacement and get rid of the BOV. It's not needed and making you run rich possibly.

    There could be many reasons why your car is surging. Automatic or manual? How many miles? Mods?

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    Good news, everyone! xxxxxxxAnub1s's Avatar
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    Specifically, what do you mean by "surging".

    If you're driving the vehicle hard, meaning in boost or above 3,000-4,000 RPM's, it's not going to perform correctly, and you're going to destroy your engine over time.
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    Registered User Patryk's Avatar
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    let your car warm up, and im guessing you dont have a tune
    need more details
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    Well il send you a pic if the exhaust, but I just bought it and this is how it is, when it's warmed up it doesn't do it.

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    It's turboback exhaust, and fatty piping.

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    Registered User kbrownmann's Avatar
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    Quote Originally Posted by Twora View Post
    my 02 wrx surges when its not warmed up,
    all cars do this... if your talking about the same thing im thinking... when you start it up cold it idles high to warm up
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    It goes to high then low rpms until it's warmed up

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    Quote Originally Posted by Twora View Post
    It goes to high then low rpms until it's warmed up
    So RPM's cycle during idle then? Like say from 1500 down to 750 up to 1500 again and repeat?
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    yea anubis, thats exactly what it does.but about from 200rpm to 1700rpm. but it doesnt do it all the time when its not warmed, it does do it in the morning though. Also my car is running a little rich, i think it may be the bov though, skreekin i think your right...
    Last edited by Twora; 06-17-2010 at 06:47 PM.

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    Good news, everyone! xxxxxxxAnub1s's Avatar
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    I'd start with cleaning your IACV, personally.
    Cody
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    Registered User lytlec's Avatar
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    http://forums.nasioc.com/forums/showthread.php?t=781242

    That shows you how to clean the IACV
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    thx im gonna try that!! guys can you tell me if this is a ****ty bov and what kind of filter is the one that looks like its connected to fuel lines, and is my exhaust to fat? lytec have you done this and how long did it take if you did?
    Attached Thumbnails Attached Thumbnails photo (1).jpg   photo 2 (1).jpg   photo 3.jpg  
    Last edited by Twora; 06-17-2010 at 07:08 PM.

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    Good news, everyone! xxxxxxxAnub1s's Avatar
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    That's not a fuel filter.... it looks like sombody's half-assed ghetto attempt at an air oil separator.

    That BOV looks to be a GFB 50/50 to me.

    Your exhaust is fine as long as it's not rubbing on anything.
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    Registered User lytlec's Avatar
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    No, never cleaned my IACV just thought I would find the directions for ya!
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