Its been a while since my last post, ive had tons of trouble out of my car and I have more.......everytime i turn my ac on....it squeals and shakes real bad......everyone says its my belt and its loose, but ive also heard that the belt has this like automatic tightner majiig

on it and it keeps it as tight as it needs to be......is this true and if not, what do i need to tighten the son of a b&^%$

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