It's my 94 Caravan, 180K. Its serpentine belt would come off in any rainy days, even roads are just a little wet. I have got the belt re-installed many times in a garage. The mechanic has replaced the tensioner and belt with new ones a year ago, but it still happens again and again. Now I think it's possible the garage has never done it right. Maybe I should get the van to dealer for a permanent fix? Or I have to live with it?
Thanks,
John