I have a 4cyl Automatic 99 accord that keeps stalling on me while idling and driving. The motor and power steering just suddenly cut out, electronics stay on. Used to be that it would do this very infrequently while driving, but now when I start the car, it will stay on for a while, then turn off. I replaced the fuel pump myself about a month ago. I'm not sure if the heat has anything to do with the increased problems or if that's just a coincidence. If I hold the key fully turned it will usually stay on, I don't know if that means it's an electronic issue or what, possibly a main relay failure?