Follow up....I drove the car about 100 miles today and not a single error code or surge. I am falling back in love with my 400. This week I also accomplished a few other tasks after visiting the junkyard last week. I installed used windshield washer motors. I now have functioning windshield squirters. I installed a used hirschmann power antenna. I can now hear radio stations. I installed a used heater control valve. I now have a heater that works whenever I want it too. I replaced the clutch fan which I kind of messed up last year but was still usable. I replaced the switch to adjust my passenger power mirror. Wow! What a week. I love the junkyard. I even picked up extra coils and ETA just in case mine ever go bad.

Well, I just want to say again. Thanks mbdoc!