What Causes the Steering Wheel to Make Noise When Gently Shaken in Place?
2 Answers
The causes of noise when gently shaking the steering wheel in place are the shock absorber's thrust bearing and the stabilizer bar. Shock Absorber Thrust Bearing: If a clicking sound is heard when gently shaking the steering wheel in place, it is likely due to insufficient lubrication in the shock absorber's thrust bearing. To confirm, open the hood and listen to see if the sound is coming from the top mount of the shock absorber. If it is indeed the thrust bearing making noise, applying some grease to the bearing may help. If the noise persists after greasing, replacement is necessary. Noise from the Stabilizer Bar: If the noise is not from the shock absorber, check if the stabilizer bar bushings are loose or damaged. Damaged bushings will not only cause noise when turning the steering wheel but also when driving over uneven roads. Loose stabilizer bar bushings can be fixed by adding shims, but damaged ones must be replaced.
When I used to work on cars, I often encountered situations where there was a strange noise when lightly shaking the steering wheel while stationary. The most common causes fall into three categories: wear or looseness in the steering column, where the joints of the column rub and produce a creaking sound when turning the wheel while stationary; loose ball joints in the tie rods, which make a clicking noise; and aging rubber or damaged bearings at the top of the shock absorbers, leading to friction-induced noises. These issues are all related to daily driving wear and tear, especially accelerated by frequent driving on bumpy roads. I recommend first trying to diagnose it yourself: park the car securely, gently shake the steering wheel, and pay attention to where the noise is coming from. If the noise is coming from under the steering wheel, check the steering column first; if it's from the sides, inspect the tie rods. Don’t delay, as the risk of steering failure increases, so get it checked by a professional shop early to avoid minor issues turning into major repairs. Regularly applying grease to the joints can help extend the lifespan of these components.