I have been having some terrible belt problems for the last month. I put on a Dayco belt. It did well for about 1 1/2 weeks. Then it started to cherp. The ideller pully had some play in it so I replaced that hoping it would solve the problem, it didn't. The local Ford dealer helps me determine that it is infact the belt slipping so I go back to AdvancedAuto and they give me another, I swap it out while I am there. The cherp goes away, for a week that is. Now it back again and I am left wondering what I should do. There is no question it is the belt, because when I replace it the problem goes away. 2 brand new Dayco's.
2001 Ranger Edge