There is a good reason that engines have a cooling system. There are numerous rotating metal components within the engine that are constantly rubbing up against each other and creating friction. This friction generates a lot of heat which could end up wearing out the components and the entire functionality of the engine. However, the coolant and oil of the vehicle are the two liquids which work to reduce these hot temperatures and keep the engine at a normal healthy temperature. That way, the internal components will not get worn down from heat and will stay fully functional for as long as possible.
The Most Causes of Engine Overheat
Of course, there are bad situations that can arise which will cause the engine to overheat. All there needs to be is a problem with the cooling source for the engine to overheat. To figure out what the exact cause of your overheated engine may be, let’s review the main possible causes.
Below are the top 5 causes of an engine overheating.
1. Low Level of Coolant
The cooling system of a vehicle is responsible for regulating the flow of current to the engine. Although oil assists in the lubrication and cooling of an engine’s components, the coolant liquid has the greater responsibility of cooling the engine system down. If there were to be a leak in the cooling system which resulted in coolant fluid being lost, then your engine would heat up rather quickly. It wouldn’t take long for the temperature gauge to show that you have an overheated engine.
2. Low Level of Oil
Oil plays a key role in cooling your engine’s components. All the metal components rubbing against each other and creating friction will generate a lot of heat in the engine. The oil is responsible for lubricating these components so that the friction and heat generated is reduced. So, if there is a low supply of oil or simply old oil that has not been changed for over 6 months, then you need to place new fresh oil into the engine.
3. Bad Water Pump
If you have a failing water pump then your engine will overheat. Coolant would not be able to circulate properly throughout the engine without a functioning water pump. It is not uncommon for water pumps to break either because the bearings within them go bad after a while. If you have an overheated engine, investigate the water pump to see if that is the cause.
4. Radiator Blockage
When coolant passes through the hot components of an engine, it absorbs the heat from them. The coolant becomes hot and then flows into the radiator of the vehicle. The radiator absorbs this heat from the coolant to make the liquid cool again. This allows the coolant liquid to recirculate back into the engine and cool down the components all over again. Well, if the radiator were to have a buildup of deposits and debris, it will prevent the steady circulation of coolant to go in and out of the radiator. This means the engine won’t receive the coolant, resulting in an overheated engine.
Read also: 5 Causes of Car Engine Only Cranks, But Won’t Start
5. Thick Coolant
It is not enough to have an adequate supply of coolant in your system. The coolant must also be concentrated so that it can flow properly through the radiator and engine. But if the coolant becomes unconcentrated and starts to become thicker and gel up, then it won’t be able to adequately circulate throughout the radiator and engine. The coolant can get like this when the temperatures are cold outside. If you live in a location which can get below freezing temperatures, do not be surprised if the coolant reacts like this. It may sound strange that an engine can overheat in below freezing temperatures, but it can if the coolant is not flowing properly.