Many drivers, especially in the summer, face the annoying problem of engine overheating as soon as the air conditioning is turned on, even for a short period. This phenomenon is not only annoying to passengers, but can also cause serious damage to the cooling system and engine. The most prominent possible causes of engine overheating when the air conditioner is running: engine overpressure The air conditioning compressor consumes a significant portion of the engine's power when it's running. If the compressor is faulty or operating at low efficiency, it places an additional burden on the engine that may cause it to overheat, especially when towing a load or driving long distances, according to carfromjapan. 

Weak cooling system Efficient air conditioning requires a powerful cooling system capable of dissipating the heat generated by the condenser's operation. If the condenser fins are clogged, or if the cooling fan or water pump is damaged, this will impede the flow of coolant, leading to engine overheating. Cooling fan or temperature sensor fault A faulty cooling fan or temperature sensor can cause an incorrect engine temperature reading or delay the fan from turning on when needed, which can cause overheating when the air conditioner is turned on.

 Place the condenser in front of the radiator. In some cars, installing the condenser in front of the radiator can obstruct the flow of cool air to the engine, especially if dirt or rust has built up on its fins, impairing cooling. Simple steps for prevention and solution: Check the coolant level and ensure the system is free of leaks. Check the type of refrigerant in the air conditioner, as using an inappropriate type may negatively affect the system's efficiency. Clean the radiator and condenser periodically to ensure efficient airflow. Check the thermostat and replace it if it is stuck. 

Drain trapped air in the cooling system and change the coolant mixture every two years. Fill the air conditioning system properly if the gas level is low. Frequently Asked Questions: Does low refrigerant cause overheating? Not directly, but it increases the load on the compressor and motor. Should I replace the thermostat if the heating occurs repeatedly? Yes, especially if you notice constant heat when the air conditioner is running. Does high humidity affect? Indeed, it forces the air conditioning system to work harder, which increases the load on the engine. Engine overheating when the air conditioning is on is a problem that should not be taken lightly, as it could lead to engine damage or complete failure. Early inspection and regular maintenance are the first line of defense against this problem and maintain the vehicle's efficiency during the hot summer months