i have a 92. the only time my check engine light has ever come on when its not suppose to was when my distributor died. it took awhile to finally give up the ghost.. it made the typical high pitched bearing noise. being located near the belts made it hard to figure out where it was coming from at first. there were recalls on the distributor on several honda models in the early 90s. the recall is no longer available but honda replaces the distributor with the same type so the bearing will go bad again. obd11 is for the generation after ours and up and when the check engine light comes on, it is emissions related. not sure what obd1 cels trigger in our cars.

i had a bad valve that needed to be adjusted that created a whole mess of symptoms but never triggered the check engine light. a bad coil and ignitor wont make a sound when they go out. but u will get symptoms of poor running performance. i ended up replacing a whole mess of original parts last summer because of the age of the car and miles. coil, vss, o2 sensor were the original. then i did the dist cap, rotor button, wires, plugs. stayed with all honda parts. the valve created the most trouble as far as rough running. even when my transmission died i didnt get a check engine light.