I'm actually having a similar problem. When I turn the wheels to the left or right while moving, there is a squeak that seems to be variable with the speed I am moving. It sounds like it is coming from the front axle.
Let me see if I can describe the squeak a bit better. You know how when you have a rock or tack or something in your tire? Obviously, as you move, it only hits once per revolution but the sound speeds up with your speed. My sound does the same thing only it's a squeak. It kind of goes Reeee-Reee-Ree-Re-rere-rerere-rererere.
It doesn't seem to do it at higher speeds but I don't turn the wheel far enough to be sure on that one.
I'm thinking perhaps the u-joints but have never replaced them so I don't know how to tell if they're bad. Any suggestions? My power steering fluid is full.
It's a 2000 cherokee w/o any lift. :-( No money yet and since a German nanny wrecked my last one, I'll have to wait.