Insufficient or No Cooling

Observe the servo vacuum with the temperature lever at 65° F. If it is over 12 in. Hg. and there is no cooling, check the refrigerant circuit and the recirculate door circuit. If under 12 in. Hg., check the Automatic Temperature Control (ATC) temperature sensor cable adjustment. If OK, ensure that vacuum is available at the ATC temperature sensor. If OK, replace the ATC temperature sensor.