M-Series (M1, M3, M5, M6)General M-Series Discussion - If it does not fit into a more specific M Category above, please place it in here. In addition, previously archived M-Series discussion is located in this section.
How loud is it?... e36 tend to have noisey vent valves for the A/C. If you turn your air on and then completely turn it off you should hear the sound I'm speaking of.
Check those two including the one above.
If I was standing 30 feet away, I'd have a hard time hearing it; from the inside of the car, it's about 1/4-1/3 the volume of what I can hear inside from the horn. Not sure how the hood affects things yet, as it has decided to behave today.
I don't think it has to do with the A/C, since I've heard it both with the A/C on and with the A/C (and climate control entirely) off.
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