What Causes Abnormal Noise When Turning the Steering Wheel?

[VonJuniper]

Reasons for abnormal noise when turning the steering wheel: 1. Friction between the steering column and floor mat. If the noise comes from below the steering wheel while turning, check the steering column and floor mat. An oversized aftermarket floor mat may directly contact the steering column, causing friction during rotation. Lack of lubrication can produce noise—applying lubricant usually resolves this. 2. Clock spring (spiral cable) malfunction. If the noise originates inside the steering wheel, it's likely caused by interference with the airbag clock spring. 3. Lack of lubrication in strut mount bearings. When external noises occur during steering, it may indicate dry strut mount bearings needing lubrication. 4. Loose stabilizer bar bushings. If the noise isn't from strut bearings, inspect stabilizer bar bushings for looseness or damage. Worn bushings cause noise during steering and on rough roads. Tightening with shims may help, but replacement is necessary if damaged. 5. Contaminated power steering fluid. Dirty fluid increases system pressure, causing a "humming" noise from the power steering pump, requiring immediate fluid replacement.