[yeehawbrother]

Noise Clip (Wouldn't let me embed the video)

This noise will usually present itself when at operating temp and at idle. It probably happens when driving but I cannot hear it over the exhaust.

I heard a couple people say it could have been the water pump, so that was replaced maybe ~2500 miles ago. Still makes this noise. Unless the waterpump was installed incorrectly or it had a bad bearing, I have no idea what this noise could be.

 

[corollacoaster]

Take off the serpentine belt and check all the pulleys for grinding or wobbling or squeaking.