tentioner

Hi All, as the title suggests I have been through 2 tensioner pulleys in the past 2 years and now it needs replacing for a 3rd time even though the last one was only done 3 months ago, but once again it's screaming its head off as soon as the engines warm! Surely there's some underlying problem...

gday all, I have a supercharged vs statesman and the tentioner assembly has failed, it's making that lovely knocking sound so it needs to be replaced, I've done this before on my old vs n/a ecotec so I know how to do it but I just want to clarify that the tentioner assembly off a n/a ecotec is...