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| 11-18-2009, 04:22 PM | #1 |
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Buzzing
After getting home last night from driving for about half an hour (nothing spirited) I noticed a buzzing sound coming from under the bonnet. I couldn't work out where exactly it was coming from within the engine bay. It was fairly loud (I could hear it from the back of the car clearly) for about a minute, then quietened down a bit, but hung around for a little while.
It wasn't there this morning after I drove to work. Any ideas what it could have been?
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| 11-18-2009, 04:26 PM | #2 |
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Maybe you have a bee in your bonnet?
 Couldn't resist. Seriously though, no idea.
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| 11-18-2009, 06:31 PM | #3 | |
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Quote:
 Haven had that in my car, but my LR has a buzzing noise often after switching off. I think I is coming from the brake system plumbing. Pressures equalizing 
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| 11-18-2009, 08:47 PM | #4 | |
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| 11-19-2009, 05:54 AM | #5 |
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Yep, my car does the same thing. After shutting her off from a long day's drive, I can hear a slight whining from the engine bay area.
I believe other BMWs in the family do the same thing, so there's nothing to worry about. WOPALX is probably on the ball with this one.
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| 11-19-2009, 03:09 PM | #6 |
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Water pump keeps running to ensure temps are kept under control. As the ambient temps gets hotter coming into summer you will notice this a little more. Every one should keep an eye on oil temps also.
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| 11-19-2009, 03:34 PM | #7 |
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Thanks for the responses guys. I noticed it only happens on a decent drive (half hour or more), so it makes sense that it has something to do with temperatures.
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