Refrigerator Freezing

Question

I have a Sear's Side by Side Refrigerator 106.50542001 made by Whirlpool. The Refrigerator side has been freezing since replacing the Condenser fan unit with a universal motor. I then replaced the Thermostat control unit. The Refrigerator compartment unit is still freezing. The Freezer section goes below -27 and the Refrigerator section goes to 10 to 18 degrees very quickly. I have to shut the unit off to warm it up. Changing the Temperature settings in any direction does not amount to any increases in the refrigerator compartment.