What Causes the Rear Shock Absorber Noise in Older Focus Models?
2 Answers
The causes of rear shock absorber noise in older Focus models are as follows: 1. Shock absorber oil leakage or bending. Check for oil on the shock absorber housing or dust cover and replace the shock absorber if necessary. 2. Abnormal aging or wear of the shock absorber pressure bearing. 3. Deformation of the shock absorber spring. 4. Noise from the wheel bearing. Maintenance methods for shock absorbers are as follows: 1. During storage and use, ensure cleanliness and tightness to prevent moisture and impurities from entering. 2. Perform regular maintenance every 40,000 to 50,000 kilometers. 3. If shock absorber oil is lacking, low-temperature hydraulic oil can be used as a substitute.
I also experienced rear shock absorber noise issues with my old Focus, which is mostly due to vehicle aging. The most common cause of noise is hardened or cracked shock absorber bushings—rubber components stiffen and crack over time, causing creaking sounds when the bushing rubs against the metal frame during wheel bumps. Another possibility is leakage of damping fluid inside the shock absorber or worn valves, which reduces damping performance and may produce squeaking noises. In my case, I once found loose or rusted rear axle bolts during inspection—they felt wobbly with just a light touch. I recommend getting a quick check at a repair shop first, such as pressing down on the rear to locate the noise source. If the bushings or shock absorbers are damaged, replacing them isn’t too expensive—just a few hundred bucks. Don’t delay, as other suspension components could be affected.
