I have a weird issue in my Lexus GS430 2006. I always using obd2 scanner to monitor the temp. If i open the A/C the engine start overheating the system. The problem the temp continue to raise until even it reach 105C to 107C which cause the needle to move. All mechanics checks the vehicle and the say it is engine issue. But even engine was check from head gasket leakage and water pumps and hoses and temp sensor and thermostat and radiator and radiator cap, and fans, and the fan controller. All of these items are in good condition. So i replace them all and the car still presistance and i replace the engine 2 times and still presistance. Now the 2 things remaining is either the A/C compressor or the engine harness. What is the issue here exacly?