What Causes the Humming Noise When Driving a Nissan Sylphy?

[ChloeMarie]

Introduction to the causes of humming noise when driving a Nissan Sylphy: Lack of power steering fluid or issues with the power steering pump: Check if the power steering fluid pipe is clogged. If metal shavings are found in the power steering fluid, components of the power steering system need to be replaced. After inspecting the pipe for leaks, if any are found, replace the leaking pipe immediately. After replacing the pipe and refilling the power steering fluid, if the pump no longer makes a humming noise, it indicates a lack of power steering fluid. Other causes of humming noise when driving: Air trapped in the hydraulic system not fully purged or deformation of the high-pressure oil pipe of the power steering pump. Note that whether it's a damaged power steering pump or an oil pipe leak, after replacing the new parts, drain all the old oil and be sure to use Honda's original power steering fluid, as Honda's power steering pump has high requirements for fluid quality.