Hello I'm thinking about changing my tensioner pulley assembly on my 2003 4.0 because I've changed an older pulley and belts twice but there's this annoying chirping/squealing sounds that continues to come back. This is usually after heavy rain and for example when I intentionally wet it it'll squeal like hell. So to fix the problem for the last couple of months since it's been cold out I put a scoop of flour on the belt. And that shuts up for about a week or two. But now that summer is coming around and the humidity will take over I want to replace it so I want advice for anyone that's had this problem. Should I change the pulley on the tensioner or the whole tensioner assembly? Thanks for reading