What are the possible causes of bumping noise from the left front wheel of a Crown?
2 Answers
It may be due to inaccurate four-wheel alignment of the vehicle. Long-distance driving causes significant tire wear, leading to uneven tire wear and resulting in abnormal noise. It is recommended to check if there are sand particles trapped between the brake dust shield and the brake disc of the left front wheel. If present, remove them. Below is an introduction to the Crown: 1. The Crown comes in four models and seven grades, all equipped with a 3.0L dual VVT-I engine, paired with a 6-speed automatic transmission, and built on an FR (front-engine, rear-wheel-drive) platform, combining smooth handling with powerful driving force. Additionally, the Crown achieves an ideal weight distribution of 53:47 between the front and rear body through maximum lightweight design of the engine and suspension system and scientific layout, maintaining body weight balance. 2. In terms of active safety, the Crown adopts advanced braking technology and excellent driving assistance equipment, including TRC traction control system, VSC vehicle stability control system, and VDIM vehicle dynamics integrated management system, ensuring optimal grip under various road conditions and delivering outstanding handling effectiveness. 3. In passive safety, the Crown utilizes the world-class high-performance GOA body technology, with standard equipment including 11 airbags, such as side curtain airbags and knee airbags.
I've been driving a Crown for many years, and this creaking noise from the left front wheel over bumps is quite common. The most frequent issue is aging shock absorbers—they start squeaking as soon as you hit a bump, likely due to leaked fluid or worn rubber bushings, which prevents proper impact absorption. Next is the suspension system; loose ball joints or linkages can rattle and make noise when going over bumps. Then there are tire and wheel issues—worn wheel bearings or uneven, bulging tires can also cause clunking sounds on rough roads. Last time I had a similar issue, replacing the shock absorber a few months ago fixed it. I suggest first checking your tires for abnormal wear. If the noise persists, take it to a professional shop to prevent suspension problems from worsening and affecting driving safety—older cars like the Crown require extra care.