What Causes Acceleration Shaking After Replacing Shock Absorbers?
2 Answers
Replacing shock absorbers causing acceleration shaking is due to: Damaged shock absorber: A normal shock absorber has a dry and clean exterior surface. If there is oil leakage, it indicates that the hydraulic oil inside the shock absorber has escaped from the upper part of the piston rod. In this case, the shock absorber is basically ineffective. Damaged shock absorber top mount: The front shock absorber top mount of a car is made of rubber material, and its main function is to assist the shock absorber and shock absorber spring in providing certain damping and cushioning effects. When the shock absorber top mount is damaged due to excessive wear, in addition to abnormal noises during operation, even if the shock absorber is not working, there will be abnormal noises when turning the steering wheel in place.
I've personally experienced similar issues, usually caused by changes in suspension height after shock replacement, resulting in misaligned drive shaft angles. During acceleration, uneven power transmission in the drivetrain causes shaft imbalance during rotation, leading to body vibration. It might be due to improper calibration during installation, loose screws, or component movement. I recommend immediately checking chassis components, such as whether the universal joints are functioning properly - this relates to vehicle height adjustment. If the new shocks are too stiff or too soft, altering the original suspension geometry, it can easily put extra stress on the drive shaft. Another possibility is disrupted wheel balance, creating vibrations during driving. Get a professional four-wheel alignment and wheel balancing as soon as possible to ensure everything is properly positioned. Don't forget to inspect tires and rims - installation processes might sometimes unintentionally damage them, increasing vibration risks.
