Oddest thing happened today. After driving a half hour or so with zero problems, I make a brief stop and when I start back out, I got a terrific belt noise from the area in front of the engine. Pulled over within a block. Things starting to stink. Figured it was a seized AC pump, so pulled the clutch wire and started back up. Same thing. Bolted for home, a half mile, squealing all the way. Opened the hood and poured water on the belt area to prevent any fires. Dang hot. Started engine and ran out front to see what's stuck and it's the power steering pump. Pulley just sits there locked in place. Let it sit an hour or two and go to restart it and it purrs like a kitten. Huh? The fluid may be a little low, but it's not out, by any means. Yanking the pulley around, it seems like the bearings are fine. The engine never got anywhere near hot while driving.
What could cause this? Why would it fix itself when cooled down? Probably should replace it, of course. I just like to find smoking guns, so I know the problem.