Causes and Solutions for Overheating Engine Temperature When Using Air Conditioning

[StEleanor]

Causes and solutions for overheating engine temperature when using air conditioning are as follows: 1. When turning on air conditioning: Cause: The thermostat opening is not increased or has reached maximum but temperature remains high. Solution: Improve cooling capacity. 2. After turning on air conditioning: Cause: Increased load leads to higher heat dissipation, naturally raising coolant temperature. Solution: Maintain original equilibrium temperature by increasing thermostat opening. 3. Other causes: (1) Insufficient coolant: Leakage in cooling system causes low antifreeze level, leading to temperature rise. If antifreeze level is low, check for leaks. If no leaks found, promptly add same type of antifreeze. Do not add tap water or other antifreeze types to avoid dilution/precipitation causing failure. (2) Thermostat failure: If temperature remains high after increasing thermostat opening, consider replacing the thermostat.