What are the causes of power steering pump noise?
2 Answers
The main reason for abnormal noise in the power steering pump is often due to internal lack of oil causing friction sounds. It is necessary to check the fluid level in the reservoir. If it is below the minimum mark, you need to add power steering fluid until the level reaches the maximum mark (MAX). Power Steering Fluid: Power steering fluid is a special liquid used in the car's power steering pump. Through hydraulic action, it makes the steering wheel very light, similar to automatic transmission fluid, brake fluid, and shock absorber fluid. Precautions for replacing power steering fluid: Power steering fluid contains carcinogenic substances. If it comes into contact with the skin, it should be washed off immediately. Power steering fluid is corrosive and can cause paint to lose its luster and rubber parts to age. If it comes into contact, it should be cleaned immediately. For cars equipped with hydraulic power steering systems, avoid turning the steering wheel to the extreme position for a long time, as this can burn out the power steering pump.
I've been driving for over twenty years, and it's not uncommon to encounter a situation where the power steering pump is making a buzzing noise. The most common cause is when the power steering fluid is too low or too dirty. When the viscosity of the fluid increases and it doesn't flow smoothly, the pump can produce a harsh noise. Another common issue is the aging or wear of the pump itself, where internal bearings or vanes become loose, causing unusual noises, especially noticeable during cold starts. Additionally, a loose or aged belt can slip and produce noise when rotating. When facing such problems, I usually start by checking the fluid level in the reservoir. If it's low, I add new fluid. If the noise persists, it might be time to replace the pump. If not addressed promptly, the power steering assistance can weaken, making driving more tiring and potentially dangerous. I recommend going to a repair shop for a thorough inspection as soon as possible, and regularly changing the fluid can extend the pump's lifespan.
