Good news - you don't have 3 ignition coils, you have one. It is later 104 motors that went to the 3 coil setup. So your coil is at the other of the wire coming out of the center of the distributor cap. More good news - your car has a 16 pin diagnostic connector from which you can read fault codes. Try a search and learn how to build the code reader and read codes. There will most likely be good clues there.