2010 x5m engine whine

[grkwolf20]

Can someone tell me what are the possible causes for engine whine?
It louder when is cold out and more at low rpm. Any suggestions greatly appreciated.

[M5_1of400]

Originally Posted by grkwolf20

Can someone tell me what are the possible causes for engine whine?
It louder when is cold out and more at low rpm. Any suggestions greatly appreciated.

Bearings on the pulleys, it can be the Alternator pulley, Idler pulley, belt tensioner pulley, etc.

[grkwolf20]

I really hope thats the case, someone also said that might be oil pump or water pump but i also think pulley.

[Sophisticated Redneck]

Check your power steering pump too. They love to whine when low on fluid or when about to go

[RichardH]

Does it sound like this?
Its a video i made a few years ago

[grkwolf20]

Originally Posted by RichardH

Does it sound like this?
Its a video i made a few years ago

Yes and no, i do have that whine but it doesnt get louder with higher rpms, it also sounds worse when its colder. i think i will start by taking he belt off and check the pulleys and see if that would be the issue. because oil pump sounds like a big job.

[maruzo]

Originally Posted by grkwolf20

Yes and no, i do have that whine but it doesnt get louder with higher rpms, it also sounds worse when its colder. i think i will start by taking he belt off and check the pulleys and see if that would be the issue. because oil pump sounds like a big job.

Did you ever find out what caused that whining noise? I also have a very similar sounding whine coming from my E70 X5M. It’s more pronounced at low speed/low rpm and cold starts.