Why Does the Car Make a Squeaking Noise When Going Over Speed Bumps While Cold?

[LeAdriel]

The reasons for the squeaking noise when a cold car goes over speed bumps are: 1. The shock absorber rubber pads are too cold and lose elasticity; 2. Aging of the lower control arm bushings and stabilizer link bushings; 3. The bushings at both ends of the shock absorber are made of materials like polyurethane or hard rubber, which harden and create gaps when cold. Speed bumps are traffic facilities installed on roads to slow down passing vehicles. They come in strip or dot shapes and are made of rubber or metal, with alternating yellow and black colors for visual attention. They slightly raise the road surface to achieve the purpose of slowing down vehicles. They are placed at road intersections, industrial and mining areas, schools, residential areas where vehicles need to slow down, and sections prone to traffic accidents. They are specialized safety installations designed to reduce the speed of motor vehicles and non-motor vehicles.