07/01/2026
LESSON of the Day:
CAUSES OF CAR OVERHEATING
Car overheating is usually caused by issues in the cooling system, such as low coolant levels from leaks, a faulty thermostat or water pump, a clogged or broken radiator, a broken radiator fan, or a blown head gasket, all preventing heat from escaping the engine effectively. Low engine oil and a bad radiator cap can also contribute.
COMMON CAUSES:
π₯ Low Coolant: The most frequent cause, often due to leaks in hoses, radiator, water pump, or head gasket, or simply neglect.
π₯ Faulty Thermostat: If stuck closed, it blocks coolant from reaching the radiator to cool down.
π₯ Broken Water Pump: The pump circulates coolant; if it fails, coolant doesn't move.
π₯ Damaged Radiator: Leaks, clogs (debris/corrosion), or a blocked surface prevent heat dissipation.
π₯ Bad Radiator Fan: Electric fans failing to turn on, especially at low speeds, reduces airflow over the radiator.
π₯ Clutch fan is not working properly due to low level of silicon oil.
π₯ Cooling System Leaks: Holes in hoses, radiator, head gasket, or seals allow coolant to escape.
π₯ Blown Head Gasket: Allows hot combustion gases to enter the coolant system, causing rapid overheating.
π₯ Clogged Coolant Passages: Buildup of mineral deposits inside the engine or radiator restricts flow.
π₯ Low Engine Oil: Oil helps cool the engine; low levels increase friction and heat.
π₯ Faulty Radiator Cap: Fails to hold pressure, lowering the coolant boiling point.
WHAT TO DO IF YOUR CAR OVERHEATS:
π Stop Safely: Pull over and turn off the engine.
π Let it Cool: Allow significant time for the engine to cool down.
π Check Coolant (Carefully): Once cool, check coolant level; add the correct 50/50 mix if low.
π Inspect for Leaks: Look for puddles or visible leaks under the car.
π Get Professional Help: A mechanic can diagnose and fix the specific problem, as overheating can cause severe damage.
NEXT LESSON:
πPrevention of Car OverHeatingπ
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