I have a 1993 Honda Civic EX that recently had overheating problems. We fixed that and at the same time replaced the fuel filter, distributor cap, spark plugs/wires, oil/oil filter and some fuses. It used to have an intermittent stalling problem. It would run fine for a while and then stall. I would try to restart it and, most of the time, it would restart. Sometimes I would have to leave it for a while, and then come back to restart it. I used fuel cleaner and that seemed to help for a while. After the recent fixes it won't start at all now. It cranks fine, just no start. After checking several forums, I've tried replacing the main relay and the ignition coil, but neither worked. The ECM seems to be working fine because the main relay gets all three clicks and the dash lights work. The check engine light doesn't stay on either, so I can't get a code. I'm at a loss for what else to do. Any thoughts?

Replacing the Ignition Control Module (ICM) will likely solve the problem:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-4.html#post265896

Thanks for your help! It worked like a charm.

Nice job!