The purpose of the engine's cooling system is to remove excess heat from the engine, to keep the engine operating at its most efficient temperature, and to get the engine up to the correct temperature as soon as possible after starting. Ideally, the cooling system keeps the engine running at its most efficient temperature no matter what the operating conditions are.

As fuel is burned in the engine, about one-third of the energy in the fuel is converted into power. Another third goes out the exhaust pipe unused, and the remaining third becomes heat energy.

Broken hose. Hoses wear out and can leak. Once the coolant has left the system it can no longer cool the engine and it overheats.

Broken fan belt. The water pump is driven by the engine through a belt. If the belt breaks the water pump can not turn and coolant will not be circulated through the engine. This will also lead to engine overheating Autel MaxiSys Pro.

Faulty radiator cap. The radiator cap is designed to hold a certain pressure in the coolant system. Most caps hold 8 - 12 PSI. This pressure raises the point in which the coolant will boil and maintains a stable system. If your cap does not hold pressure, then the car could overheat on hot days since the system never becomes pressurized.

Inspect your radiator cap for deterioration of the rubber seal. Replace if you think it is worn. $5 - $10 is cheap insurance.

Have your coolant system flushed every 5 years. It gets all the corrosion which has built up out of the system autel maxidas ds808.

What to discuss with your mechanic:

Let your mechanic know when your overheating problems occur. Overheating when idling points to a different problem than overheating at highway speeds.

WARNING: Never open your radiator when the engine is hot. The pressure in the system can cause hot coolant to splash out and burn you.

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