Temperamental I would say.
Did the vacuum and put in the 2 can, clutch in and out wile charging the freon, normal I though, went inside truck and put the thermometer on uper vent, clutch still cycling, not normal I though then open the lower vent at the bunk and clutch engage for ever. Temperature at the upper vent drop to 45, went outside and check gauges 10psi low side and 150psi high side ambient temperature of 75 , not normal I think.