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BMW 3-Series (E90 E92) Forum
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328 N52 engine rattle noise
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05-29-2020, 09:07 PM | #1 |
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328 N52 engine rattle noise
Anyone have any idea what it could be? Happens even with belt off and as seen in the video, the fan is not spinning so not that either.
VIDEO: Last edited by franksinatra; 05-29-2020 at 09:09 PM.. Reason: added link |
06-07-2020, 01:14 AM | #2 |
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For anyone experiencing the same issue... This ended up being my vacuum pump. It has made this noise on and off since I got the car and put over 30,000km on it before I started noticing any problems (strange noise when braking). I didn't find much information online about these as they don't seem to be a common failure item, but somehow mine did. When I took the old one off the car and spun, it was not building very much vacuum when compared to the new one. I'm not sure where the rattle/knocking noise comes into play, but I'm happy I was finally able to resolve the problem.
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06-10-2020, 02:24 PM | #3 | |
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06-10-2020, 03:43 PM | #4 | |
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