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Thread: 2006 X5 Acceleration noises

  1. 10-16-2011, 08:38 PM #1
    mstart
    mstart is offline Member
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    Oct 2011
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    Mountain View, Ca 94040
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    My Cars
    2006 BMW X5

    2006 X5 Acceleration noises

    I've had this SUV for a few years and want to know what causes a whistling sound (air compression noise) when i accelerate at lower speeds (45mph and lower). I only hear this when the window is down - so maybe the noise is there at higher speeds, not sure, but windows are up if I'm on the highway. Any Ideas?

    Also, any recommended independent BMW mechanics in the Mountain View/Palo Alto area?
    Last edited by mstart; 10-16-2011 at 08:42 PM.
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  2. 10-16-2011, 11:38 PM #2
    mstart
    mstart is offline Member
    Join Date
    Oct 2011
    Location
    Mountain View, Ca 94040
    Posts
    2
    My Cars
    2006 BMW X5
    Quote Originally Posted by Placey View Post
    Idle Air control valve transitioning, when it closes, it will cause a "whistle" due to the narrowing air passage right before fully closing...
    thank you, anything i need to replace or worry about?
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