Loud a/c fan
Recently I noticed a very loud fan noise when the a/c fan speed is on wide open in full auto mode. After the car cools down, and the fan speed reduces to low in fully auto mode, the noise goes away. If I place my hand on the lower part of the tunnel where my right leg rest, I can feel a vibration as well.
Any ideas on what this could be? I did a search and didn't really find anything similar.
1998 528i - sold 222,000 miles
1998 540i - sold 159,000 miles
2007 328i Coupe - 30,000 current