5 Causes of Engine Overheating

When you are driving and suddenly the check engine light illuminates, it could be the first sign of car trouble. There are various reasons why your car’s check engine light could come on, from a faulty chip or a loose gas cap to a blown head gasket or something much worse. But in the case of car engine overheating, there are 5 probable causes behind the problem. And the signs are not hard to see.

engine overheating

One of the first overheating car engine signs is usually seeing the temperature gauge nearing or exceeding the maximum internal engine temperature level illustrated on the dial. But you just see smoke coming from the car hood most often! Another sign of your car engine overheating is smelling burning fuel or oil. Below, here are 5 cause of engine overheating.

Radiator Issues

There are two common defects in a radiator that can lead to a car engine overheating. First, your bad radiator fan could be the reason of engine overheating. In order to help control the temperature of the coolant, this radiator fan blows air over the radiator fins. If the fan comes loose, has broken shrouds, or when the engine is off it spins freely, it cannot perform its intended duties, causing the coolant temperature to raise and overheat the engine. Another reason could be a faulty radiator if you see the radiator fan is working just fine. Leaks, clogs, and broken lines can cause a radiator to malfunction, and subsequently, cause a car engine to overheat.

Cooling System Issues

The vehicle cooling system lines can get clogged or blocked with dirt, rust, or sediment. This inhibits the vehicle cooling system from being able to do its job, thus causing the engine to overheat. This is why regular fluid flushes and replacements are necessary. Another common cause is vehicle’s cooling system leaks. For overheating car engines, leaks in the cooling system are a frequent cause. Also, if you use the wrong coolant for your car, it can have the same effect. Be sure to get an even water-to-coolant ratio.

Water Pump Issues

The water pump is colloquially known as the “heart” of the car since like a heart pumps blood it pumps coolant to reduce engine heating. But a vehicle’s water pump pressurizes and propels coolant through the cooling system, so it plays a major role in a car’s temperature control. If something goes wrong, the coolant can’t make it to the engine, and the engine gets too hot.

Thermostat Issues

Another common reason for overheated car engines is a bad thermostat. A thermostat is a heat-sensitive valve that opens and shuts in accordance to the engine temperature. If something goes wrong with the thermostat, it gets stuck in the closed position and the car engine’s temperature will skyrocket.

Belt and Hose Issues

Loose and broken belts, as well as, burst or worn hoses can overheat the car engines. Belts turn the water pump to cool the engine. If they stop working, so does the cooling system. In the other hand, faulty hose means leaks, which means a lack of engine coolant. This also causes a car engine to overheat.








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One thought to “5 Causes of Engine Overheating”

  1. This is a great article – I didn’t know that overheating could be caused by belt and hoses – so I might mention this to my mechanic next time I get my car checked out! I have got quite an old car, so I know I’m more susceptible to engine overheat than other people I know, why is incredibly frustrating! That’s why it’s always fantastic to come across articles like this. The first time my engine overheated I was massively panicked and stressed out trying to work out what I’d done wrong, so thank you for the detailed advice! (On a side note – I read another article recently which offers a couple of tips on what to do if overheating happens when you’re actually out and about, which was useful – here’s the article if anyone needs it – hope this helps). Thanks for the article and great advice!

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