Serpentine belt won't stay put!
Hello! I'm new here...but weren't we all, at some point?
I have an '89 Astro Van. This morning, I tried installing the serpentine (fan) belt twice, and each time as soon as I turned the engine it knocked the belt off. Everything spins freely (except that one that drives it), and the second time I made sure it was well seated on all the pulleys before turning the key.
So, now, the question: What's the most likely cause for the belt not to stay in place? Second most likely cause? As many possibilities as I have to go through to figure it out/make it work?
Thank you in advance--many blessings!