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What Are the Causes of Squeaking Noises from a Car Chassis?

2 Answers

JosieFitz

07/25/25 1:28pm

The causes of squeaking noises from a car chassis are: 1. Corrosion or aging of the stabilizer bar bushings; 2. Damaged brake pads; 3. Malfunction in the connecting parts between the suspension and shock absorbers; 4. Noise from the wheel bearings; 5. Deformation of the shock absorber springs; 6. Aging or wear of the shock absorber pressure bearings. The engine chassis primarily serves a load-bearing function, with the car engine and all its components and assemblies mounted on it. The car chassis consists of the transmission system, running system, steering system, and braking system, ensuring the normal operation of the vehicle. The thickness of its plastic sealing material can reach 1.5 to 2.5 millimeters, providing protection when the underside is scraped by road protrusions.

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DiLucille

08/11/25 8:45pm

I've been driving for many years and always find the squeaking noise from the chassis quite annoying, especially on bumpy roads or when turning. The most common causes are issues with the suspension system, such as aging or loose rubber bushings on the shock absorbers, or friction in the stabilizer bar linkages leading to noise. Temperature changes can make these components more fragile, and the noise becomes more noticeable in cold weather. My previous car had this issue—the squeaking grew louder over time. When I took it to the shop, they found that the control arm bushings were worn out, and replacing them made it much quieter. Regular maintenance is crucial. Pay attention to when and where the noise occurs, as it helps diagnose the root cause faster and prevents minor issues from escalating into major repairs that could compromise safety. Remember, the chassis is the skeleton of the car—any problems should be taken seriously.

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