When i turn on ac my vehicle over heats

4719dave

okay started with bad leak in the rad .So i replaced with new radiator,thermostat,anti freeze ,water pump ,clutch fan and fan blade .....surprise turn on my ac and truck over heats turn on heater fan on high brings it to normal temp .It dose it even when im driving ...im turned wrenches for over 30 years omg im at a lose

thecardoc3

How fast does it overheat, from the time you turn the AC on? What make/model/year/engine? How many ways have you confirmed the overheating, just the temperature gage? Scan tool? Is it boiling over?