Originally Posted by will259

Hey everyone new guy here first post so I apologise if this has been posted before. I have a 95 GT 5.0. No mods other than a cold air intake and flowmaster 40 series exhaust. I got the car about 3 months ago. everything was fine but the ac didn't work. I work at a garage so I had one of our techs charge it and it worked for 3 days. turns out the compressor was leaking. I had just the compressor replaced. and the AC has been working awesome. Now the car has started to over heat if the AC is on and only if it is on. So far I have replaced the radiator, cooling fan assembly,180 degree thermostat, flushed the system and had it tested for a head gasket leak. The head test was normal no exhaust in the coolant. I'm just stumped, The ccrm is working normally. the fan comes on at both speeds at temp. if it is cloudy or raining no problems. If the GA sun comes out the temp heads over to 230 in about 10 miles of driving hwy faster in stop and go. AC stays cold. when I shut the ac off it will slowly go back down to around 190 to 200. Any help would be appreciated