View Single Post
      06-25-2017, 07:37 AM   #1
New Member

Drives: 320d se
Join Date: Sep 2011
Location: Armagh

iTrader: (0)

Strange rev dependant noise from air vent

Hi, I recently bought an e92 320d privately. I have an issue when driving, I'm hearing a constant noise from the passenger air vent. It's rev dependant and gets more noticeable as the revs increase. It sounds like a blowing noise and it happens when the air blower is on or off, and also when air con is on or off. It isn't load dependent either; just constantly there! Extremely annoying the only thing I can think of is that the serpentine belt is resonating through the air con pipe up through the vent. Anyone know if this is normal? Thanks