An elderly friend of mine has a 05 PDS cart w/ rear seat and no lift and a torque chip installed. After riding appx 15 min. with passengers the cart will stall like the batteries are dead. when it sits for a while it will run like there s no problem.After reading an earlier post I think this cart in having an issue with the controller overheating.I do know she rides at part throttle because at 92 she doesn't want to go real fast,not to mention she is too short to put the pedel all the way to the floor.Does overheating sound like a possible cause of this? The dealer she bought it from has tried numerous times to fix it and can't. I have driven it trying to duplicate the problem but I have not tried driving it at part throttle yet. Any help or opinions are appreciated.