Have a 2004 couple with 80k miles, was 50 miles from home car died would not restart, flatbedded it home when was unloading it it restarted and surprised everyone including the tow operator. Looked at a lot of things on the forum, all good information and three strong possible causes. Need feed back on what you have experienced in order. Car starts up no problem runs for approximately 30 minutes then dies. Wait anywhere from 5 minutes to a couple hours and restarts right away, fails again when car warms up in about 30 minutes, not overheating. Have also had intermittent check engine light coming on. Have had o2 sensors and air pump replaced did not solve the problem. From everything I've found on the forum it could be the Relay Module. the crank sensor, or the cam sensor. The car does crank over just does not start. Battery is good. So in order which would you choose first.

Both cam and crank sensor can cause this type of condition, but the Relay module controls fuel pump, engine control, and has the Air pump relay so this could be the culprit. Since none are cheap would like your input on which you would look at first. I saw the detailed fix for the Relay module but mine were not in need of being re-soldered. The module does feel pretty hot after the 30 minutes of running