When going ~25mph or less and I take a corner, the steering wheel will sway back and forth until I straighten out of the turn, then it's fine. And, if i'm turning at a slow rate, such as pulling out of a parking lot, my car has a loud whine as I turn the wheel.

Anybody know what this is? Is this my power steering pump? I've checked the fluid and it's fine. Maybe a clogged line? Maybe a bad pump? I have no idea??? I have some time this saturday to dig into the car so If you guys have any ideas, that would be greatly appreciated.

Thanks guys!