I've got a 2004 Dodge Dakota 4.7 V8 and the power steering has been acting funny lately. It acts like it's going out sometimes and other times its fine. I think the belt may be slipping on the pump pulley. When I watch the tensioner, I can see it moving back and forth a little bit. I'm pretty sure it has an auto-tensioner on it. Has anybody had this happen to them? How hard is it to change/tighten the tensioner? I can't see anyway of tightening it up.