Originally Posted by the88thpianoman
Doesn't your 4.0 have an automatic belt tensioner? Or is that just on the newer ones?
just the newer ones. i over tightened mine once and learned my lesson real quick, i ate through a pulley, a water pump and a harmonic balancer. now this is how i do it. tighten it to where i think its a tiny bit too loose, then start your engine and if it squeals tighten it a tiny bit more, and continue the procss untill it stops squealing. my belt still squeaks from time time but im fine with that.