# Mysterious noise

**URL:** <https://community.cartalk.com/t/mysterious-noise/26169>\
**Category:** Maintenance/Repairs\
**Created:** [February 7, 2009, 5:12pm UTC](https://community.cartalk.com/t/mysterious-noise/26169 "2009-02-07T17:12:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![tommpat](https://avatars.discourse-cdn.com/v4/letter/t/48db29/32.png) [@tommpat](https://community.cartalk.com/u/tommpat)\
**Post date:** [February 7, 2009, 5:12pm UTC](https://community.cartalk.com/t/mysterious-noise/26169/1 "2009-02-07T17:12:21Z")

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We have a 2004 Malibu with 40k gently driven miles. Rececently a whirring or tonal sound will occur randomly when braking. It does not happen every time. It does not sound at all like the familiar grinding of worn brake pads and comes from the rear. What is it? Any clue?