AC makes me overheat?, Tried search with no luck Options

[FreddyTheOthaMea...]

So i went on a small road trip today and thought i would finally use my AC. cranked it on and like 5 minutes later i notice that im about to severly overheat. I turned it off and switched to heat to help cool it off. worked fine. then after that i notice when I keep my RPMs high i start to over heat as well- heat goes back on. any idea what might be causing this? I thought it might be the thermostat sticking closed or something... really weird that the AC would cause it too tho

[p0lish]

So i went on a small road trip today and thought i would finally use my AC. cranked it on and like 5 minutes later i notice that im about to severly overheat. I turned it off and switched to heat to help cool it off. worked fine. then after that i notice when I keep my RPMs high i start to over heat as well- heat goes back on. any idea what might be causing this? I thought it might be the thermostat sticking closed or something... really weird that the AC would cause it too tho

AC compressor uses your engine power to run. You might notice that your power diminishes as you turn on the AC.
Overheat may be caused by a few factors - bad thermostat, clogged radiator/hoses, bad head gasket.
Turning on AC worsens one of the above conditions.

[DEATH]

I had this problem on my last celica - turned out to be the connection to the AC fan on the radiator had come loose - clicked it back in and everything worked fine.
Start your car, open the hood, have someone turn on the AC and make sure your passenger side radiator fan comes on - if not that's your problem.
Hope this helps.