Cold startup Noise
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This is a discussion on Cold startup Noise within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; 2004 WRX with cbe uppipe intake and a tune is making a noise when the temps drop below 20 deg. ...

  1. #1
    Registered User KenFerrari13's Avatar
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    Cold startup Noise

    2004 WRX with cbe uppipe intake and a tune is making a noise when the temps drop below 20 deg. It almost sounds like a building pressure for something. Goes away after 30sec-1min. Starts fine, fluids full.

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    He simply abides. SD_GR's Avatar
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    Cold startup Noise

    Is it clacking or what?
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    Registered User KenFerrari13's Avatar
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    Sounds kinda like a building boost noise but at idle along with a slight grinding noise. I dont think its the turbo though just sounds kinda similar

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    Pro Manscaper Mikie13's Avatar
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    Take a vid and post it.

    There really is no way we can tell you what it is without actually hearing it.
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    Registered User KenFerrari13's Avatar
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    Thinking it might be the cai sucking in air at high idle at cold start

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    He simply abides. SD_GR's Avatar
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    Cold startup Noise

    The description could be a belt, tensioner, or roller; the latter two could be outside or inside the timing cover.
    WRX Info Links, Courtesy TheJ
    Man is a brute.... If you're cruel to him, he respects and fears you. If you're kind to him, he plucks your eyes out. Alexis Zorbas
    I lied. I cheated. I bribed men to cover the crimes of other men. I am an accessory to murder. But the most damning thing of all... I think I can live with it. And if I had to do it all over again - I would. Benjamin Sisko
    DISCLAIMER: Opinions expressed are the author's alone and are inherently worthless.

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    Registered User KenFerrari13's Avatar
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    I think it may be the cai in taking air on high idle but i guess could be the air pump?

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    Registered User KenFerrari13's Avatar
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    update: goes away if clutch is pressed in

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    Registered User Ingo's Avatar
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    Interesting. Might be the throw-out bearing... When it warms up the noise quits, could be?
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    He simply abides. SD_GR's Avatar
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    Cold startup Noise

    Agreed throw out bearing. Not to worry until ambient temps go up, or if it does it all the time.
    WRX Info Links, Courtesy TheJ
    Man is a brute.... If you're cruel to him, he respects and fears you. If you're kind to him, he plucks your eyes out. Alexis Zorbas
    I lied. I cheated. I bribed men to cover the crimes of other men. I am an accessory to murder. But the most damning thing of all... I think I can live with it. And if I had to do it all over again - I would. Benjamin Sisko
    DISCLAIMER: Opinions expressed are the author's alone and are inherently worthless.

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    Registered User twister8008's Avatar
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    Cold startup Noise

    Both my new WRXs make a high whine sound when weather is really cold. (Below zero). The sound goes away after about 5-7 seconds. I think the turbos just hate cold weather...or North Dakota
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    Pro Manscaper Mikie13's Avatar
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    Quote Originally Posted by twister8008 View Post
    Both my new WRXs make a high whine sound when weather is really cold. (Below zero). The sound goes away after about 5-7 seconds. I think the turbos just hate cold weather...or North Dakota
    Turbos LOVE cold weather...they dislike hot
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    Resident meany-rator 06wrx4me's Avatar
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    It could be the clutch pressure plate. I always thought the noise I had was a throw out bearing, then I replaced everything associated with the clutch and it made the same noise. Watched some Youtube videos, and turns out it was pressure plate/flwheel noise. While the noise is loudest with light weight flywheels, it is audible in stock form.
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    Registered User twister8008's Avatar
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    Cold startup Noise

    Tell that to my car... She hates anything below -10F...
    Yellow lights mean go faster!!!

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    Registered User mcdbrendan's Avatar
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    Quote Originally Posted by twister8008 View Post
    Both my new WRXs make a high whine sound when weather is really cold. (Below zero). The sound goes away after about 5-7 seconds. I think the turbos just hate cold weather...or North Dakota
    The noise you are hearing is the power steering pump. Mine does the same, and it's perfectly normal


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