I installed a new serpentine belt tensioner into my 1994 Chevy Suburban C1500. It vibrated as much as the old one did, so I assumed that a bit of vibration is normal and forgot about it. Well, after recently looking at some instructional videos, I am now under the impression that any vibration in the tensioner is bad. Here is what is going on – http://www.youtube.com/watch?v=aECDdNFZ6Q4
Is it OK or should I get another new tensioner?