Ok, I have a 91 Accord LX Sedan 5-speed, with a JDM H22A. I am running a JDM P13 OBD1 ECU. About a week ago, I drove the car for an hour on the highway, parked it for 2 hours, and got back in. Car just cranked and cranked, no fuel pump running or CEL. Towed it home, installed a new main relay (known good). Still no start. Did the main relay harness/main relay testing though the Honda FSM and everything tested good. Throwing a code 0 (no blinks when service connector is jumped, the light stays on steady).

Replaced the computer with another P13 OBD1 (USDM I believe). Drove the car for 15 minutes and it just died as I was cruising at 55MPH. Went to start it back up, same thing (no fuel, CEL code 0).

All fuses are good, thermostat ground is fine. Car ran fine, I put many miles on it up until the other day. What am I overlooking in this case? I can't figure it out but I want my car back!

Thanks!