Grinding Noise from interior Fan

[MetzgerMeister]

Hi all,

I have what I can only describe as a slight grinding noise from the fan (air con) in the cockpit of my F30. It goes away when I turn it off but is there at all low speed settings whether the A/C itself is on or not and it kind of increases with revs. I had something similar in my E92 which required a spray of lithium grease on a point that was visible and accessible from above in the engine bay.

Anyone else have this and solve it? I might try removing the cowling at the bottom of the windscreen and check to see if anything is visible.

[318 iS Cosmos]

Was the noise there prior to the engine failure? BMW might have disturbed something when removing the engine

[MetzgerMeister]

Yeah it was always there. On another forum it says to remove the blower motor and clean it out as well as lubing it. Often times a leaf can get stuck in it but there was nothing like that in mine.

I removed it, cleaned it and lubed it and the noise is still there.