Yeah the advice is good. It is time to remove the belt, check all pulleys and idler (if installed) and make sure they are all good no loose bearings. Then you need to make sure the pulleys have no oil or rust on them which will cause the new belt to squel. Then install a new belt. <$30 bucks for a good belttry a goodyear gatorback. It should take no more than 30 minutes if you find nothing wrong. But if you haave no idea how it could be a little difficult but go to you tube aand check for a video there are a ton of videos for all sorts of things and some are actually very very good. Basic tools nothing fancy. Take a chance save a buck or two and have a cold beer when your done.
89YJ 2.5L TBI, AX-5, NP231 SYE, Tom Woods Shaft, 33" BFG T/As, 4" lift.
AF Jeep Club Tail #184