1999 Honda Accord Engine dies

My engine will stumble and die. It will go for sometimes 2 days working fine and then suddenly stall. Seems to happen most often after driving for 5-10 minutes, shutting off for 10-30 minutes and then upon restarting will die within a minute. Once it dies it tries to start but sounds like ignition timing is off. After cooling for a while (the longer it cools usually means it will run longer) it will restart barely, run for a mile, and die again if it hasn't sat long enough or most times perfectly after completely cooled. It has never died and not restarted after sitting overnight. I have repalced Map sensor, ignition coil, ignition module, dist. Cap, wires, plugs, main fuel relay, and when it dies and won't restart I can hear the fuel pump kick on for it's two second pressurization when I turn key to "run" position. It is showing a code for catalytic convertor but I don't beleive that would cause car to stall out (doesn't run long enough for ccatalytic convertor to get hot and create too much back-pressure) My thoughts are learning towards the non-replacable crankshaft sensor inside the distributor but it's not throwing a code for that?