Turn the compressor off.
Turn off the defroster.
If it has AC assist and the compressor is shot, cut the belt or disconnect the defrost from the compressor.
IT IS NORMAL FOR IT TO CYCLE LIKE EVERY 20 OR 30 SECONDS IT AUTOMATICALY COMES ON WHEN THE AC COMPRESSOR IS ENGAGED
Something is wrong with it. Turn it off until you can have it looked at. Continued short cycling will kill the compressor.
most likely, the ac compressor is not functioning properly. when compressor's speed sensor is not the same with engine speed the ecu will shut off power to compressor. time for new compressor.
If you want it constantly running jumper the high pressure cut off switch wire. And if you dont want it running turn off the ac. If pully is seized see if a napa can get a shorter belt to route around the ac compressor
Because it might overheat or need a break.
low on freon
because it is going through defrost cycle
most likely it is out of freon
Any of the following can cause it to shut off......... 1. Turn off the switch.. 2. Turn off the ignition key.. 3. Change the control to heat only..