Out of place serpentine belt
i just changed my power steering pump (bearings were bad), and replaced the tensioner. for some reason the serpentine belt is not staying in the middle of the wheel. I had the belt set reset to the middle 4 times already, but after driving around a bit, the belt is out of place again. This morning I replaced a new tensioner. I was told the tensioner might be defective. But again the belt is out of place again. Any idea what might be causing this? The pump and the tensioner was the only 2 parts i changed in the car recently.

