This one has me stumped. I've got a 96 Camry with the 1MZ. started missing the other day giving codes P0300 P0301 P0303 and P0305, Back bank is missing. I've checked wires. plugs, and vacuum hoses. Runs great in park or neutral, put a load on it and runs really roough. I've checked everything I can thing of, Any suggestions or other ideas would be greatly appreciated. Being new on this board, I think it is great.