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2006 BMW 330i Question: High pitched squeek upon light acceleration



bmw330girl, Springfield, MO, April 08, 2011, 22:26

I have a high pitched squeeking noise upon light acceleration. It seems to be inconsistant. But, you can hear it. Any ideas on what it could be?

3 Answers
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  • Answer #1

    April 09, 2011, 19:36

    Sometimes you can hear a similar sound when the breather system (PCV) failed.
    A BMW specialty shop should be able to check the PCV pressure with a manometer.


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  • Answer #2

    Visitor, May 02, 2011, 23:46

    parking brake. just had mine fixed

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  • Answer #3

    Visitor, May 17, 2011, 12:21

    If the sound is originating from the right rear wheel, it may be the brake pad wear sensor. It apparently will "flex" enough and make contact, producing the squeak. Really annoying; a local BMW shop should be able to adjust it, but it may set you back ~ $100. Design-flaw.

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