What Causes Abnormal Noise in a Car Water Pump?
1 Answers
Abnormal noise in a car water pump may be caused by loose belts, bearing issues, or water seal-related components. Solutions are as follows: Loose Belt: Abnormal noise at idle speed may be due to belt wear and looseness. Adjusting the belt tension or replacing the belt usually eliminates the noise; in this case, the noise does not affect the water pump. Bearing Issue: If the problem is with the bearing, the abnormal noise will persist even when the engine speed is increased. In this case, the water pump must be replaced, as this type of noise affects the pump. Water Seal-Related Components: The key components of a water pump are the water seal and the bearing. Their failures are interrelated. If the water pump and shaft-bearing structure are well-designed, bearing wear generally does not cause water seal eccentricity, leading to leakage and noise. It is recommended to manually rotate the bearing to check for any sticking. If there is none, the issue may lie in the water seal design. Symptoms of a Faulty Car Water Pump: A damaged water pump can weaken or even stop the cooling circulation; coolant leakage near the water pump area may leave traces of coolant color on the pump's ventilation holes, accompanied by symptoms like high engine temperature; abnormal noise from the water pump while the engine is running.
