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  1. 08-30-2008 07:33 AM #1
    audipotential
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    Humming noise at exactly 10.5 Vacuum???

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    Has anyone have any idea what this could be? The car doesnt slow down or act any differently....It just makes a somewhat loud humming noise when the vacuum is at that point. As soon as you give les or more throttle, it goes away.



    Ideas??
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  2. 08-30-2008 07:49 AM #2
    pondside36
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    Re: Humming noise at exactly 10.5 Vacuum???

    Is it from the boost gauge, ie buzzing?
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  3. 08-30-2008 08:06 AM #3
    audipotential
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    Re: Humming noise at exactly 10.5 Vacuum???

    Quote Originally Posted by pondside36 View Post
    Is it from the boost gauge, ie buzzing?
    How can I explain it...It almost sounds like something is rubbing but it isnt! its coming from the front of the car
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  4. 08-30-2008 08:10 AM #4
    pondside36
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    Re: Humming noise at exactly 10.5 Vacuum???

    Do you still have good vacuum past 10.5? Could be a vacuum leak noise as air is ucked into the system from atomsphere...
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  5. 08-30-2008 08:29 AM #5
    old guy
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    Re: Humming noise at exactly 10.5 Vacuum???

    The APR R1 DV has been known to get noisy. You may be hearing the transition where the vacuum pressure equals the DV spring pressure.
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  6. 08-30-2008 08:41 AM #6
    audipotential
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    Re: Humming noise at exactly 10.5 Vacuum???

    Quote Originally Posted by pondside36 View Post
    Do you still have good vacuum past 10.5? Could be a vacuum leak noise as air is ucked into the system from atomsphere...
    Its weird I have no problem whatsoever with my car. No vac loss no boost loss. nothing.

    I guess its just the DV being noisy
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  7. 08-30-2008 03:14 PM #7
    ScaryGary
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    Re: Humming noise at exactly 10.5 Vacuum???

    It's from the boost gauge. Mine began doing that as soon as I installed the gauge.
    calm the fuck down. it's all relative.

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  8. 08-31-2008 12:17 AM #8
    bananas
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    Re: Humming noise at exactly 10.5 Vacuum???

    is it a humming noise, or does it sort of sound like a light rattle?

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  9. 08-31-2008 07:01 AM #9
    audipotential
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    Re: Humming noise at exactly 10.5 Vacuum???

    Quote Originally Posted by bananas View Post
    is it a humming noise, or does it sort of sound like a light rattle?
    It sounds like a tire rubbing against something basically.
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