Why is the engine still hot after the car has been parked for 6 hours in summer?
2 Answers
When a car engine is running, it generates a large amount of heat. Ventilation system: Therefore, ventilation systems and cooling devices are designed to dissipate the high temperature inside the engine through coolant circulation, while engine oil lubrication also helps reduce heat generation. Additionally, the rapid operation of the fan can also help dissipate the engine's temperature. Temperature alarm: To better monitor the engine's temperature and working condition, a temperature gauge or alarm is designed. If the engine's operating temperature exceeds the manufacturer's designed temperature, an alarm will be triggered, indicating poor engine working conditions or the need for inspection and maintenance.
This is a pretty common issue. It's normal for the engine to still be warm after parking for six hours in summer. Due to high temperatures and direct sunlight when parked outdoors, heat in the engine bay doesn't dissipate easily. Right after stopping, the engine is very hot, and while the cooling system continues working for a while—like the fan running for a few more minutes—the cooling efficiency of the coolant is lower in extreme heat, causing heat to accumulate in metal components. That's why six hours isn't enough for it to cool down, especially if parked under direct sunlight. If the weather is cooler or the car is parked in the shade, it cools faster. Of course, if the engine is unusually hot or the fan keeps running nonstop, there might be a cooling system issue, such as a faulty water pump or fan, and it's best to get it checked to prevent overheating damage to the engine.
