What Causes the Humming Noise When Driving an Eighth-Generation Accord?
2 Answers
Regarding the causes of noise when driving an eighth-generation Accord, the explanations are as follows: 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 pipes for leaks, if any leaks are detected, they must be promptly replaced. Once the leaking pipes are replaced and the power steering fluid is refilled, if the power steering pump no longer makes a humming noise, it indicates the issue was due to insufficient power steering fluid. Other reasons for noise when driving an eighth-generation Accord: Air trapped in the hydraulic system not fully purged or deformation of the high-pressure power steering pump pipe. Note that whether it's damage to the power steering pump or oil leaks in the pipes, after replacing with new parts, all the old fluid must be drained, and it's essential to use genuine Honda power steering fluid, as Honda power steering pumps have high requirements for fluid quality.
Recently, my eighth-generation Accord also encountered this issue. The humming noise is particularly noticeable when driving. Initially, I thought it was a tire problem, but after inspection, I found that the wheel hub bearing was worn out. After prolonged use, bearings can age or get water inside, causing a humming sound. Additionally, unbalanced tires or uneven tread patterns can also produce noise, especially at high speeds. I also suspected an exhaust system leak, as a loose tailpipe can create a similar sound. Belts or water pumps in the engine compartment can sometimes hum as well, though this is relatively rare. The best approach is to listen for the location of the sound. If it's coming from both front and rear wheels, it might be the bearings; if it occurs at specific speeds, it could be a tire issue. For safety, I recommend taking the car to a professional shop to check the bearings and balance the tires. Replacing them should resolve the problem.
