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      02-14-2019, 04:54 PM   #1
Pharaoh2716
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Exclamation What’s making this terrible noise? Answer: Rock in heat shield

Noticed a strange noise coming from my M4. Super prevalent on deceleration and coasting at very slow speeds. Pretty noticeable. Sounds like metal is hitting metal or two forces are rubbing against one another. Checked under the car and didn't see anything abnormal. No warning lights and the car drives fine otherwise.

Car wizards, please see attached video.

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      02-14-2019, 05:56 PM   #2
jmg
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Originally Posted by PureModelsOnly View Post
Could be a rock in the brake heat shield
This. Usually solves itself after awhile. Take it on the freeway to shake it loose.
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      02-14-2019, 06:01 PM   #3
Pharaoh2716
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Thank you so much for the feedback!
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      02-14-2019, 06:20 PM   #4
2kaccordocoupe
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Get a poker stick and poke the heat shield with it. You'll hear the rock fall.
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      02-14-2019, 06:44 PM   #5
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I usually go into a deserted parking lot, and do a quick acceleration in reverse. Always works (so far)
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