Zorro, def change that belt and get a GOOD look at the serpentine path !!! I had all the same problems that you are having and then WHAM!!! the belt broke off and 2 seconds after that my butt was in a sling because I had no pwoer to anything and no clue to the path the belt was supposed to go on.
It took me 3 days to track down somebody on here to send me a file that had the proper path for the belt.
Good luck and change that belt !! It's only $35.00 thru NAPA and well worth the money...