I did the valve cleaning process and reassembled. Car would not run. If I held throttle pedal down is would start and run at 2000-3000 rpm for a few seconds and then die. I got three codes on my ScanGauge- U114B, U115B, and U115E. The Bentley manual says "lost communication with engine torque 1, lost communication with engine torque 3, and lost communication with engine data." Any suggestions as to what I should look for?