Engine Overheating | Car Engine Overheating Reasons

Published by revjust21 on

Why does Car Engine Overheat? What are the reasons for Car Engine Overheating?    

In our daily lives, we face many problems. We know the solution to some but not for all. One of the problems that people face is overheating of the Vehicle Engine. An Engine overheating happens due to the Engine Cooling System Failure. The function of the Engine Cooling System is to keep an Engine temperature in the operating range. Engine when not provided with proper cooling can overheat. Engine Overheating can results in serious damage to engine parts. So, let us first figure out why Engine overheating happens.

Engine Overheating | Car Engine Overheating Reasons
engine overheating

Reasons 1: Low Quantity of Engine Coolant Liquid: –

The purpose of the Coolant is to provide cooling to an Engine. It absorbs an Engine heat and keeps an Engine temperature in the working range. The engine cannot be cooled properly if the coolant level is low, leading to rising in an Engine temperature causing an Engine Overheating. To prevent the problem of an Engine Overheating, check the coolant level regularly. It is filled in the Coolant Reservoir in the engine compartment. Add good quality of coolant with sufficient amount of water.


Reason 2: Leakage in Engine Cooling System: – 

 There can be a leakage in an Engine cooling system leading to loss of an Engine Coolant, causing an Engine Overheating. Leakage can be due to loose connections or burst of delivery pipes or failure of any other part. In this case, you need to get your vehicle inspected by the good technician.

Reason 3: Radiator Failure: – 

The radiator is an automotive component, used to cool down the coolant liquid by allowing it to lose its heat to the environment and air. If the radiator fails to perform its function efficiently, it will lead to the overheated coolant, ultimately causing an Engine Overheating.

Reason 4: Thermostat valve Failure: – 

A thermostat is basically, a switch that response under coolant temperature in engine coolant galleries. When coolant temperature in Engine galleries reaches the threshold value, the thermostat valve opens and allows the coolant to flow towards the radiator.

Reason 5: Failure of Coolant/water pump: –

The function of the coolant/water pump is to circulate the coolant from engine coolant galleries to radiator once the thermostat valve is open. Due to the failure of the coolant pump, the coolant cannot be circulated and ultimately engine will get overheated. Generally, the coolant pump is driven by engine crank by a belt drive. The failure of a belt drive can be the reason for coolant pump failure. The nominal wear and tear can be reason of water pump failure.

Reason 6: Failure of Radiator Fan: –

 The radiator fan is used to provide cooling to an Engine coolant. Radiator fan can be engine driven by a belt drive or hydraulic coupling or electric motor powered. For an Engine-driven radiator fan, failure can be due to belt failure or hydraulic coupling failure. But in the case of an electric motor-driven fan, failure can be due to motor failure or electric circuit failure.

Reason 7: Failure of Engine Coolant Temperature Sensor: –

Engine Coolant Temperature Sensor is used to measure the Coolant Temperature. It works on principle of NTC Thernister. Failure of an Engine Coolant Temperature Sensor leads to wrong readings to Electronic Control Unit which controls the radiator fan. So wrong reading from the Engine Coolant Temperature Sensor can be the reason for the radiator fan not working, which will ultimately result in an overheated engine.

So these are some basic reasons for Engine Overheating. The best way to prevent Engine Overheating is to keep your vehicle well maintained by getting the vehicle inspected by trained personnel at regular intervals of time. We hope that this article was helpful to you.


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