Noise....

[DRWWE]

I have a question... Occasionally in my 2002 530i I get a strange sound. Sort of a whooshing noise similar to what you'd hear if a car flew by you quickly, kind of like air suddenly rushing through a tube. Not very loud but noticable. It occurs at speed, not necessarily associated with changing speed. It occurs mostly on warm days (I didn't hear it at all during the winter) and I might hear it once or twice a day. No problem with the performance of the car though. There is no stall or anything else unusual when I hear this sound.

At my most recent service at the BMW dealer I asked them and they could find nothing and said they have never heard of that kind of problem.

Any ideas????

[driving2]

 

[M_Six]

Sounds like the a/c cranking temporarily into high. When my HVAC system opens or closes vents, I get that whooshing noise.

 

[DRWWE]

Interesting. I haven't really thought about it occurring when the AC was on but with the warm weather now it would be working harder. I'll see if there is a relationship there. I was worried about the exhaust.

Thanks.

[driving2]