1996 grand caravan 3.8. Started it up and it started misfiring and running rough. MIL came on then started to blink. Used a Mac Tools scanner and it came up with multiple misfires on number 3 coil. Bought and changed coil pack and it made no change. Tried two new packs and it made no difference. Wires and plugs are recently new Checked all the connections, no corrosion or broken wires. Could it possibly be the PCM? Not sure where to go from here.