I noticed that the automatic tensioner and the serpentine belt have to much slack to the point I can see the tensioner moving back and forth when the car is running. I changed the belt and that helped a little but the tensioner is still moving back and forth. Any help would be appreciated.. ie parts and so on...
Thanks

 

Moved to engine section

Very slight movement in tensioner is normal - If it seems
excessive the tensioner is going bad.