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What Are the Causes of Low Engine Coolant Temperature?

1 Answers

DelTravis

07/29/25 5:36pm

There are three main reasons for low engine coolant temperature. Below is a detailed explanation of these three causes: 1. Thermostat malfunction: The thermostat's function is to automatically adjust the flow rate and circulation path of the coolant based on engine load and coolant temperature, ensuring the engine operates at an optimal temperature. When the thermostat fails, the engine coolant temperature becomes low. 2. Cooling fan malfunction: The car's cooling fan is designed to increase airflow through the radiator, enhancing its cooling capacity and speeding up the coolant's cooling rate. When the cooling fan malfunctions, the engine coolant temperature drops. 3. Radiator shutter malfunction: The radiator shutter regulates the airflow through the radiator. When open, air can fully pass through the radiator, providing high cooling intensity. When closed, air cannot flow through the radiator, resulting in low cooling intensity.

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What does the fuel gauge symbol EF on the car dashboard represent?

The fuel gauge symbol EF on the car dashboard indicates the current fuel level in the tank. 'E' stands for 'empty', meaning when the fuel gauge needle points to E, the dashboard will illuminate the fuel warning light to remind the driver to refuel soon. 'F' stands for 'full', indicating that when the tank is completely filled, the needle will point to F. The working principle of the fuel gauge is similar to having a float inside the fuel tank. The float sends different signals at different positions, and the dashboard displays the current fuel level based on these signals. When driving on bumpy roads or slopes, the fuel gauge needle may fluctuate and the fuel warning light may illuminate. This occurs because the vehicle's movement causes changes in the float's height position. Therefore, to accurately check the fuel level, the vehicle should be on flat ground.

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