My parents had a care that had a bad battery that did the same thing. After the car got warm it would not start. Sit for a couple of hours and it would. On a side note on that problem, my mother was pregnant and could not drive. Dad would have to park on a hill and mom and I would have to start pushing it down the hill to start it. Dad got called all kinds of names for his pregnant wife pushing the car. LOL LOL LOL