My 1991 Accord is a great car, but recently I have a strange problem. Sometimes when I start the car, the check engine light comes on and the car runs rough, but stays running. I then turn off the ignition, and restart the car. The engine light goes out, and the engine runs perfect. This problem does not seem to be affected by temperature, so I'm wondering about something other than the main relay, which I can't seem to find anyway.
Any help out there?

Thank you, Scott

. Check for codes.

. Replace Ignition Control Module and coil, due to age of the car.