93 240sx overheating problem

[Rellik27]

well i did everything flushed the radiator, bled it with the front jacked up, new sensors and everything else. i also have altima fans, but it only overheats when i turn the a/c on. the only thing i can think of is something must be making the engine run hard already and when i turn the a/c on it runs harder than it should and therefore overheat. so i dont know what else to look for or do so any help is appreciated thanks.