Why does the car's water temperature rise when idling with the AC on but remains normal while driving?

[OAlexander]

Because the ambient temperature is relatively high, coupled with the heat generated by the engine and other machinery, the water temperature rises when idling with the AC on but returns to normal while driving. Below are solutions for high water temperature when idling with the AC on: 1. Cleaning: Visit a professional repair shop or 4S store to clean the condenser, radiator, and inspect the fan and cooling system. 2. Rinsing: When washing the car, you can appropriately rinse with a hose, targeting the gaps around the car emblem where the condenser is located. Over time, it can accumulate dust, leaves, and other debris. 3. AC: Turn on the internal circulation when using the AC to save costs, maintain a lower temperature inside the car, and avoid waste. 4. Cooling: Use intermittent cooling by turning off the AC once the car's interior temperature drops and turning it back on after some time.