I changed my belts two half years ago with dayco And as soon I turn my ac on it while sqeul for about a min and then go away , so I know it's the big belt and not power steering one .. So what should I check on it ? Get a new belt or any tips on what to look for ? I see it rotates good and straight .. Also my tensioner looks like the original with 140000 miles on it .. Any inputs thanks

 

First thing to check is the belt tension. Also inspect the belt and make sure that the ribs are/have not broken off.