Loud auxiliary-ish sounding fan?
If so, congratulations! You're water pump has failed! Welcome to the club brother
I'd get that fixed sooner, rather than later if I were you. When mine failed, I would also get intermittent power loss to the car while driving. I'd be on the highway, hit the throttle, and the car would not respond at all for ~5 seconds. Sketchy. Not sure if it was related, but I haven't had that issue since they warrantied my water pump.