P0700 - Transmission control system Malfunction
P0753 - Shift Solenoid A Electrical
P1753 - Torque Converter Clutch Solenoid Malfunction
P0141 - Bank 1 Sensor 2 Oxygen Sensor Heater Circuit Malfunction
P1166 - Bank 1 Sensor 1 Oxygen Sensor Heater Circuit Malfunction
First thing I would check is the wiring harness around the engine for damage, either hitting the exhaust or rubbing through on a sharp corner. These codes all suggest an electrical problem rather than mechanical failure in the trans, especially as you can shift it manually.
As for swapping the ECUs, Most vehicles these days have some form of security system that will shut off the power to the engine, ignition or fuel pump if any part of the system don't match up. In your case the ECU is coded to the specific VIN of the vehicle. Unless you re-program the ECU to match that VIN the spare won't work.
Saturday, June 3rd, 2017 AT 12:43 PM