I purchased A new code reader for my smart phone. I has code connect with it. The MAF code was a badly worn out air intake tube. many cracks in it. This seems to be a common problem. Once changed that code went away. The missfires were O2 sensors. Bank 1 sensor 1 and bank2 sensor 1. once changed the miss fire code went away and the van has been running fine. code connect is a wonderful thing to have at hand. This forum is of no help. seems to be plenty of people looking and no reply's. I am posting this in hopes that this information will help someone in the future.