A car engine is counted as a significant part which needs to be in perfect condition to achieve better performance. One of the worst problems that can occur with automobiles is engine overheating. It causes damage to other auto parts such as the engine’s head, the piston, and the cylinder sealing rings. In the worst-case scenario, it even requires you to do the rectification and the engine exchange. There could be several reasons why a car is overheating when idle. However, identifying the causes can save your car from severe damage.
Reasons why is my Car Overheating
Below, we list some of the main causes of why your car engine is overheating when idle.
Thermostat Malfunction
The thermostat controls the car’s temperature, and its goal is to keep it at a normal level. If it gets malfunctions, it will read the temperature wrong and consequently send the wrong information to the engine. For instance, additional cooling is unnecessary when the heat is more than required.
If the heat continues to increase, the engine overheats and both the coolant and the radiator fan stop regulating the temperature. This could ultimately cause damage to the vehicle.
Check out these symptoms of a bad thermostat. Once the thermostat problem is identified, it needs to be replaced as soon as possible.
Low Coolant Level
Having a low coolant level is one of the main causes of engine overheating. As its function is to maintain the optimum temperature for the engine. However, if it does not have the amount it should, the heat starts to increase and take over. Also, make sure you check for leaks in the cooling system.
Defect in the water pump
The role of the water pump is to pull the liquid from the reservoir so it can circulate through the engine cooling system. Therefore, a failure or non-functioning of the water pump can already prevent temperature control in the vehicle.
In this case, the pump can simply stop working completely. Also, not taking the liquid to the system or operating inefficiently and driving low volumes of fluid can wear car parts over time.
Low Oil Level
A proper oil level draws heat from the engine. Therefore, the liquid below the recommended level can contribute to the overheating of the engine. In addition to the damage that high temperatures cause, other problems can arise, such as excessive wear of certain parts because they are not lubricated as they should.
Hence, it is important to change the oil within the periods indicated by the car manufacturer. In addition, it is essential to keep an eye on the quality of the lubricant because if it is not adequate, the parts can wear out excessively.
Timing belt or fan problems
The car engine heats up quickly if the timing belt is worn out. In traffic, the fan is essential to force air ventilation in the radiator and reduce the temperature of the water that cools the engine. Also, if it does not work, problems will arise with the temperature of your vehicle’s engine. Therefore, it is important to regularly check how the fan in your vehicle is working.
Ignition system failure
A failure in the ignition system can also be one of the causes of engine overheating, as this problem can delay the spark plug firing time and overheat the engine due to poor fuel burning.
How Do You Stop Your Car From Overheating
Check out some of the major precautions that can make a difference to avoid a car overheating while idling:
- Preventive maintenance is important to avoid most automotive problems and should be given extra attention when it comes to engine overheating.
- It is important to check the radiator water level every week. Thus, you prevent it from going down due to natural causes and you can investigate if there is a leak.
- Keep an eye on the symptoms of a bad radiator on a timely basis.
- Inspect the water pump if there is any unusual noise coming from the engine.
- Put the recommended amount of additive. In your car’s manual, you will also find the type of additive that should be used.
What to do When your car is overheating
Here are the steps you must take when you find out your car is overheating:
- The first thing to do is stop the car and turn the engine off. This step is essential to avoid serious engine problems such as head burnout or pistons warping.
- After the engine cools down, check the radiator water level. If the water is low, top up with clean water and wait.
- If the water in the system has not leaked, start the car and go to the nearest garage. If water is leaking, stop the vehicle and request a tow truck.
Even if the problem seems to be solved, take the car to a trusted mechanic so that the problem can be evaluated and some maintenance can be carried out if necessary.
These were useful tips on identifying and what to do when you notice the car is overheating when idle. All vehicles can go through this situation but with the help of preventive maintenance, you can avoid the issue. In case you are planning to buy a used car in the UAE, make sure you carefully inspect its engine’s condition to avoid costly maintenance.
If you find this guide useful, stay tuned to the UAE’s leading car blog for more engine maintenance tips.
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