My 99 Accord Coupe will not start when cold (we're talking San Diego, i.e. 60 or below). Once the sun hits the hood for 15 minutes, it starts and runs perfectly most of the time. Occasionally (1-2 x) it will die abruptly, i.e. it is idling perfectly but then the fuel supply seems to be cut off and it just stops running. Every time I take it to the mechanic, it works fine for him. I have replaced the fuel pump, the relay, the distributor, the spark plugs and wires, the catalytic converter and 02 sensors (due to code pointing to the cat). I have seen plenty of similar probs on forums, but no clear answers. Any suggestions? Could it be the ECT (engine coolant temperature thingy)? The fuel damper? Any ideas? Very inconvenient in the mornings to not have transportation, and annoying to be bringing it repeatedly to my mechanic.