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What is the reason for the constant rotation of the fan after replacing the water pump on the third-generation EA888?

2 Answers

Angel

09/06/25 5:56am

Third-generation EA888's fan keeps running after replacing the water pump due to engine malfunction. Below are detailed explanations about car engines: Overview: A car engine is the device that provides power to a vehicle, determining its power, fuel efficiency, stability, and environmental friendliness. Depending on the power source, car engines can be classified into diesel engines, gasoline engines, electric vehicle motors, and hybrid systems, among others. Others: Common gasoline and diesel engines are both reciprocating piston internal combustion engines, capable of converting the chemical energy of fuel into the mechanical energy of piston motion and outputting power. Gasoline engines have high rotational speeds, are lightweight, produce less noise, are easy to start, and have low manufacturing costs. Diesel engines have a high compression ratio, excellent thermal efficiency, and better economic and emission performance than gasoline engines.

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Millard

09/18/25 5:42am

I just helped a friend with this issue recently. After replacing the water pump on the third-gen EA888, if the fan keeps running constantly, it's most likely due to air trapped in the cooling system. Last time we changed the water pump, we forgot to bleed the air, and the fan wouldn't stop running. Air bubbles in the coolant lines can trigger false high-temperature warnings, causing the fan to run continuously. Another possibility is that the connector for the coolant temperature sensor isn't properly secured—check the white plug near the water pump. Also, the installation position of the new water pump is crucial; improper installation can affect coolant circulation. It's best to check for trouble codes with a diagnostic tool or try bleeding the cooling system again.

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