How to Solve the High Water Temperature Issue When Running AC in Wuling Hongguang?

[CaydenRose]

When the engine temperature is too high, you can touch the upper and lower water pipes to check their temperatures. If there is a significant temperature difference between the two pipes, replacement of parts may be required. Below are the reasons for high water temperature when running AC in Wuling Hongguang: 1. Dirt adhering to the radiator: If the vehicle is driven on dirt roads or muddy sections for a long time, some dirt may adhere to the radiator, which over time can affect the cooling efficiency and cause high water temperature. 2. Air in the cooling system: If there is air in the cooling system, it can form airlocks, leading to poor circulation of coolant and resulting in excessive engine temperature.

[OLucia]

I also experienced the issue of rising water temperature when running the air conditioning in my Wuling Hongguang, mainly due to the increased engine load from AC operation leading to insufficient cooling. For solutions, first check if the coolant level is too low—if it's below the minimum line, top it up with purified water or dedicated antifreeze, avoiding tap water. Next, see if the electric fan is working properly; the fan should automatically start when the AC is turned on. If it doesn't, gently tap the fan or check for a faulty relay that may need replacement. Radiator clogging is also common; clean the front grille if it's dusty. If the water temperature rises too high, don't force the car to run—stop immediately to cool it down and avoid engine seizure. For long-term AC use, take preventive measures, such as changing the coolant annually, which can significantly improve cooling efficiency.

[DelCecilia]

I've repaired many Wuling Hongguang models, and it's quite common for the water temperature to rise when the air conditioning is on, mainly due to the cooling system not keeping up with the AC load. Check if the fan motor is burnt out—if the fan doesn't turn on after starting the AC, it's likely a fault. If the cooling efficiency is low, inspect whether the radiator is clogged; clean out the dust or test if the thermostat is stuck, causing poor circulation. Worn or leaking water pump impellers can also cause the water temperature to spike. It's recommended to use a multimeter to test the fan circuit or directly replace the faulty parts. Regular maintenance, such as checking the AC compressor belt for being too tight or loose, is essential as it can affect the load.

[VanCharles]

Using the Wuling Hongguang for daily commuting with the AC on can be frustrating when the water temperature spikes. To save money, first check the coolant reservoir level—if it's too low, top it up with some distilled water. See if the fan is running by listening for noise near the front of the car when the AC is on; if it's running, no problem, but if not, it needs fixing—check for loose plugs or replace the motor, which costs just a few dozen yuan. Clean the radiator fins with a soft brush to remove dust and avoid blockages. To prevent issues, change the coolant regularly—don’t wait until a pipe bursts. When temperatures are high, turn off the AC and take a break for safety.

[LilyDella]

Preventing overheating hinges on routine maintenance. Air conditioning increases load, so the cooling system must be highly efficient. Check coolant levels before each trip to ensure no leaks, and clean the radiator regularly to prevent dust buildup. If the fan fails to auto-start/stop with AC, the control module is likely faulty—replace it promptly. A faulty thermostat often disrupts circulation; test it by feeling the radiator inlet/outlet temperature difference before driving—replace if excessive. Using premium antifreeze protects the engine and extends lifespan. If overheating occurs, stop immediately to cool down.

[DiJoshua]

Temporary solution for Wuling Hongguang: If the water temperature spikes sharply when the AC is on, immediately turn off the AC and pull over to let the engine rest. Check the coolant level—if it's insufficient, visit a service station to top it up with purified water; avoid using off-brand water to prevent system corrosion. If the fan isn't working, gently tap it manually or check for a blown fuse that needs replacement as an emergency fix. For prevention, clean the front grille to remove dust buildup and ensure proper airflow. Reduce AC load by half for safer driving—avoid risking prolonged high-temperature operation, which can damage the engine.