02 Tracker Dies

This is for my nieces 02 tracker 4dr. She says if she drives it awhile and stops like at a light, it sometimes dies and wont restart for a few minutes. Also, its happened where she gets to the gas station and fills up and it wont restart for a while. I havent tested it yet, so im going off of what she said at this point. thanks any ideas.

We are having the same problems with my mother in laws 2000 tracker. So far i have replaced the fuel pump thinking that it was over heating. Well that didn't work. I had a service engine soon light on, so we took it to the local parts store to scan it. It brought up two codes, one the O2 sensor before the cat., and then the cam shaft positioning sensor. I went with the O2 sensor. Engine light went off. Thought i had fixed it until she let it idle. It died and brought back the light, and after we let it cool it started and the light was gone. So maybe we can help each other to fix our problem. I hope I have help in some way.