Brian, since nobody has replied, i thought I'd give it a shot. Golf carts are not meant to creep along at a slow speed, especially PDS carts. The controller is overheating and stallng. This is very hard on the controller and the damage is accumlitive. I see a new contoller in your future. Try not to run the cart slow for more than a couple of minutes, and keep your speed up as much as you safely can. This is my first post, so all you veterans go easy on me if I'm wrong.
Dale