Watch Out for the Heat! How to Maintain Your Car's Cooling System in Extreme Heat

(Photo Credit: freepik)

During the scorching summer heat, which affects everything including our cars, the vehicle's cooling system works exceptionally hard. If the cooling system malfunctions, it could lead to severe engine damage. So, how should you take care of it?

In Thailand, where temperatures can soar to 42-43 degrees Celsius in summer, car owners need to pay special attention to their vehicle's cooling system. Extreme heat can cause various issues related to the engine and the cooling system, such as overheating, which might cause the engine to stop working and require costly repairs. In this article, we will explore the problems and maintenance tips for your car’s cooling system to prevent such issues.

Causes of Overheating Engine

 Low Coolant Level

Regularly checking the coolant level is crucial. If the coolant level is too low or if there's a leak in the radiator, it can cause the engine to overheat. Check the coolant level every 3-4 days or at least once a week. If the level is significantly low, top up with a coolant mixture to the maximum mark. If coolant loss is excessive, have a mechanic check for leaks and repair them.

Radiator Cap

The radiator cap is responsible for maintaining pressure in the cooling system. If the cap is damaged or rusty, it may cause the vacuum system to fail, leading to inadequate coolant circulation and overheating.

Water Pump Belt

The belt connected to the water pump can cause issues if it becomes loose, breaks, or slips. This would stop the water pump from circulating coolant, leading to engine overheating.

Electric Fan

The electric fan in the cooling system must function efficiently. If the fan does not work, or if the fan blades are broken or damaged, it may not provide sufficient airflow to cool the radiator. This could be due to a blown fuse or a malfunctioning fan.

Rust in the Cooling System

Rust or debris can cause blockages in the cooling system, particularly in aluminum or steel pipes. Regular inspection and cleaning are essential to prevent blockages.

Closed Cooling System

A closed cooling system may experience issues if there is an air leak, which can hinder coolant circulation and lead to overheating.

Thermostat

The thermostat controls the opening and closing of the coolant valve. If it fails or is not functioning properly, it can cause rapid overheating as the coolant is not circulating to regulate engine temperature.

Head Gasket

A good head gasket helps maintain engine compression. If it leaks, it can lead to a drop in compression and coolant leaking into the cylinders, potentially causing severe engine damage.

Engine Oil

Engine oil plays a vital role in lubricating engine components and reducing operating temperature. If the oil level is low or there are leaks, it can lead to insufficient lubrication and overheating within the engine.

 (Photo Credit: freepik)

Prevention and Maintenance

• Check Coolant Levels: Regularly check and top up coolant to the maximum level.
• Inspect Radiator Cap: Check the condition of the radiator cap and replace it if damaged.
• Examine Water Pump Belt: Regularly inspect the belt and replace it if it shows signs of wear or damage.
• Test Electric Fan: Ensure the fan and its fuse are functioning properly.
• Clean Cooling System: Regularly clean the cooling system and check for blockages.
• Check Thermostat and Head Gasket: Inspect the thermostat and head gasket for proper operation and condition.
• Monitor Engine Oil: Ensure the engine oil level is adequate and replenish as needed.

Proper maintenance of the cooling system during extreme heat will help prevent engine overheating and potential damage effectively.

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