2004 Ford Freestar replaced plugs and wires.. ran great for 2 days then..
3.9L V6 van was running OK, then drove 26 miles in heavy rain. got a P301 code for misfiring cyl 1. Went ahead and replaced all 6 plugs and the plug wires and it ran smooth as silk for 2 days. Ran OK at startup but 10 minutes started chugging and hesitating, now have P0316, P0300, P0301 and P0305. Sounds like it could be an ignition coil pack going bad? What else could it be>