What sound is this?

[epj3]

http://www.bmwchannel.com/eric/movies/sound2.wmv

It sounds baaaaad when you're driving, you can feel it through the car, and sometimes it'll be pretty bad, and it feels like something is dragging on the engine/car. The battery is charging fine and no power lights on the dash (so I don't think it's the alternator).

 

[Montana]

Hard to tell from the video where the sound is concentrated. I would listen to the compressor. A compressor going bad would sound like metal scraps getting chewed up inside. Something that bad has to be the compressor or a bearing on another accessory...maybe even the alternator. They can still function while the bearing is getting grinded up inside.

 

[epj3]

Hard to tell from the video where the sound is concentrated. I would listen to the compressor. A compressor going bad would sound like metal scraps getting chewed up inside. Something that bad has to be the compressor or a bearing on another accessory...maybe even the alternator. They can still function while the bearing is getting grinded up inside.

Compressor? It's 16 degrees here, trust me, the AC Compressor ain't being touched

It's the water pump. My car did the same thing dan (frolf)'s car did.

Water pump bearings went baaaaaaaaaaaaaad.

 

[frolf]

HIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII



i never knew e34's would.....

 

[CosmosBlack]

Check your water pump...could be the bearing wearing out, place a sthetoscope on it and listen for the grinding. Good Luck!

Edited : *Oops! I didn't read far down enough to see that you have already found the cause! So I was right!