Temperature gauge, the device is used to control and measure the temperature in a car or vehicle. Normally, the gauge shows the average temperature, which means it is not too hot or too cold.
This means everything works fine until you see that gauge to be running hot. The gauge running hot indicates that the engine is excessively hot so that it can break down.
However, the problem arises when the gauge shows the increased temperature, but the car is not overheating in actuality. The car running hot but not overheating shows the malfunctioning in the temperature gauge.
Today, we will understand what causes the gauge to show false temperature and how you can fix it:
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Car Running Hot but Not Overheating: The Reasons
You don’t have to run the car with a false temperature as it misleads you and does not let you know the actual temperature. It is always wise to drive the car with all the things working properly to keep any mishappening at bay. Let’s see the reasons-
Failed temperature sensor
The simplest reason for car running hot but not overheating is a failed gauge itself. When the sensor that measures the temperature is faulty or does not work, it is common to notice a wrong reading.
This sometimes may get back on track by cleaning the sensor as dust and debris may come in the way.
Broken temperature gauge
The next reason can be a broken gauge as there are parts in a temperature gauge that are prone to get broken.
The needle, for example, is prone to breaking when it is stuck, such as in the hot section and breaks. It can also stick in the grease; there are many gears in a gauge that can break or stick the needle.
In this case, one should perform a needle replacement by taking your car to a repairer. In severe cases, the sensor entirely may need to get changed, and a professional comes as the ultimate help.
Head gasket failure
Sometimes, the car temperature gauge hot but engine cool means having a faulty head gasket. The seal at the coolant, combustion chamber, and engine oil pass is not secure. The head gasket forms a seal between the engine block and the cylinder head.
If this is the case, you should immediately take your car to a repairman as easing it uncured can have serious troubles.
Faulty water pump
The water pump works in the car’s cooling system which keeps the overall structure cool. A faulty water pump affects the overall cooling level of the system, and hence it may generate a warning via the temperature gauge.
Whenever there is a shaft breakage, seal leakage, or casting breakage, it can cause the water pump to malfunction. As a solution, one needs to have these areas shielded again or replace the water pump itself.
The engine is overheating
It is not necessary that every time the gauge malfunctions because sometimes you may misunderstand things.
Maybe the engine is really overheating, and you just failed to notice it. Low coolant can be the reason that makes an engine overheat, and thus, it reflects on the temperature gauge.
As a solution, you need to level up the coolant and make sure there is no air in between, and you should stop facing the issue temperature gauge high but car not overheating.
Cooling fan issues
The cooling fan helps to cool the radiator by pulling or pushing air over it. If the fan is not functioning correctly, the engine may run hot, especially at low speeds or when idling. Check the fan operation, fuses, and relays.
Clogged or collapsed hoses
Blocked or collapsed hoses can restrict the flow of coolant, leading to overheating. Examine the hoses for any signs of damage or collapse and replace them as needed.
Faulty thermostat
The thermostat regulates the flow of coolant through the engine. If it’s stuck closed or partially closed, it can cause the engine to run hot. Consider having the thermostat inspected and replaced if necessary.
How to Know If the Temperature Gauge Needs Repair
A faulty temperature gauge may encounter several issues other than indicating high temperature. It may also lead you to poor mileage if not treated timely. Here are some indications that let you know if the temperature gauge needs treatment or replacement:
If you notice the gauge fluctuating rapidly without giving a precise reading, it is a sign.
When the needle does not move even after several minutes or stays in the red zone, it indicates a faulty or broken gauge. You should learn about factors that contribute to rising the temperature of the gauge. Take your car to the repairer to solve the issue and get some maintenance tips about the gauge.
If the gauge stays at the reading of 80 and 100 degrees while driving, it is a sign too.
When you get the car on idle or move it slowly, and the gauge gets to a cold reading from normal, it indicates that there is a problem with the temperature gauge.
If your car mileage suddenly starts to be poor or drop, the faulty temperature gauge can be responsible.
When you check the radiator cap, and if it is not closed securely, then it can make the gauge show an inaccurate reading.
Conclusion
When a temperature gauge goes bad, the gauge doesn’t need to be faulty. Several factors and elements may cause the gauge to malfunction.
In case you do not have any experience with handling the technical issue, it is always advised to take your car to a repairer and deal with car running hot but not overheating issue.
