[tglazed]

So while driving to work today, my serpentine belt shredded. I was five minutes from work and coasted the rest of the way. I put in a new tensioner pulley and put on a new belt and the car then shredded the new belt. Everything was aligned. One thing that wasn't making sense while I was putting the new idler pulley on was that the top pulley was not grooves when it should be. Can anyone confirm if this part is suppose to be grooved?