In hot weather, my car will crank, but will not start. If I open on the doors and let is rest for about 5-10 minutes it will usually start right up. How do I fix this?

The PGM-FI Main Relay may be acting up, due to cold solder joints on the printed circuit board. It's best to replace them every 120,000 miles or 10 years, whichever comes first.