I have only had my printer a couple of days and it started making a squeaking/scraping noise 2/3rds of the way along the Y axis travel.
I tried cleaning and greasing the rod but that did not work.
I then found a YT video suggesting loosening the bolts on the tensioners at the back, moving the belt and retightening. After several attempts it seems to have worked but was a bit hit and miss and was wondering what that actually achieved.