Originally Posted by 98rang
IIRC, when you go to MAX A/C the compressor will only kick on when it needs to cool down the recycled interior air
The amount of time that the A/C compressor clutch is on or off is determined only by the A/C Cycling pressure switch - it is preset to keep the evaporator coil fin temperature above the freezing point of water (an evaporator coil coated with ice is extremely inefficient).
That means that the compressor clutch can cycle on and off in any position of the mode selector that commands compressor operation.
There is no thermostat in the Ranger A/C system and the A/C system does not cycle to maintain any particular temperature in the interior, regardless of mode. A comfortable interior temperature can be maintained by modulating the HVAC blower speed and/or by running the heater against the A/C.