Just started noticing this last night, or maybe my mind is playing tricks on me but does this sound funny? It makes a pulsing sound a few times a second. Here is a video from in the car and with the hood open. Yes I realize my engine bay is super oily... :x will be replacing the crank pulley seal this weekend.
In car:
85 911 Carrera Idling Noise from inside car - YouTube
Engine bay:
IMG 2522 - YouTube
Any thoughts and help is greatly appreciated!