I have a 97 Honda Civic that will occasionally die in neutral. This is what I have done so far:
- Replace both O2 sensors
- Replace MAP sensor
- Replace Air filter
- Added Lucas treatment to fuel tank
Even after the above changes, occasionally when coasting in neutral the rpm's will eventually drop to 0 and the engine will die. It starts back up just fine. My engine and fuel mileage have definitively improved with all the changes, especially after using Lucas.