i was looking through my maint. records and i rmr the previous owner said he had to replace the t-belt at 56k because the auto tensioner was making a flapping sound and it turned out that it wasnt tensioned properly. i also, saw this tsb print out in my records and it said that it would be covered under warranty. When i looked at the cost for what the guy paid for the t-belt and tensioner it was only $180, which is definitely not how much the t-belt would cost at honda. is it possible that he got this done under warranty and only had to pay for the t-belt kit? i am thinking that since honda put the auto tensioner and not an h23 manual tensioner that after 60k miles the same problem occured. the sound is coming from the right side of my valve cover at low rpm's. Does anyone know if its the auto tensioner? now that i think about it it is a flapping sound kinda. if this is the case shouldnt honda cover the charges for the auto tensioner since they didn't do it properly or since its on the tsb.