after driving for more than 5-10 minutes in the houston heat, when i turn off the car.. say to go in a get a drink at a gas station when i come back out the check engine light is on and the car wont start.. it cranks but wont start. if i pop the hood for a few minutes and let it cool it will start right up. so it has to be heat related. car is not overheating and is in perfect running condition i can tell.

anyone know why it would do this..

its a 92 2dr LS 5 spd