Sorry about the delay in response, sometimes serpentine belts can be noisy even if the look ok, what I would do is remove the belt paying close attention to the tensioner making sure it moves freely(putting tension on belt, then once remove hand spin each component( idler, power steering pump, a/c if it has, alternater etc. To see if any thing is noisy, if not I would lean towards a belt. As far as play in the idler pully if it is excessive it should be replaced. Hope this helps. I will be on here for about another hour if you have any questions.
Tuesday, February 15th, 2011 AT 4:57 PM