How to Solve the Issue of Engine Overheating Causing AC Shutdown?
2 Answers
Engine overheating leading to AC shutdown is a measure to reduce engine load, thereby decreasing engine output power and minimizing heat generation. Below are the common causes of engine overheating: 1. Inadequate cooling system performance. 2. Engine malfunction. Solutions: 1. Check coolant level: The most frequent cause of excessive working temperature in diesel engines is insufficient coolant. 2. Inspect thermostat: Normally, the thermostat valve begins opening between 78-88°C as engine temperature rises, allowing increasing coolant flow into the main circulation for engine cooling. 3. Verify engine oil level. 4. Examine cooling fan. 5. Check oil filter. 6. Assess operational workload.
That day on the highway, I encountered an engine overheating situation where the air conditioning automatically shut off. I quickly pulled over and turned off the engine. When I popped the hood to let it cool down, I noticed the coolant was nearly empty—turns out the radiator was leaking. I temporarily added some purified water as an emergency measure to drive to the repair shop. Experience tells us that we should check the coolant level and radiator hoses every month, especially before long summer trips. If you notice the temperature gauge spiking midway, immediately turn off the AC and switch on the heater to help dissipate heat faster. Keeping a jug of antifreeze in the trunk is always a good idea, and older cars especially need regular checks on the water pump and hose connections.