I've got a 1982 Plymouth Reliant 2.6? With 116000 miles. It started out with no spark so I check the ignition module that was bad. So I replace it and the pickup coil. Started and ran fine for about 10 mins. Then died and never started again. It has very very very fire at then coil. I changed coil but still have problem. Module and pickup coil are testing good.
Make sure the neg wire on the coil isn't damaged. Also check wiring coming to it. I have seen wiring break down inside the insulation, so you can't see it. If you check for resistance, you will find there is too much.