What Causes the Squeaking Sound in a Car?
3 Answers
If the car makes a squeaking sound during slow-speed driving, it is highly likely to originate from the suspension system. The car's suspension includes components such as links, springs, shock absorbers, and stabilizer bars. Any abnormality in one of these parts, such as loose bolts, can cause abnormal noises due to movement. The relevant details are as follows: 1. If the noise comes from inside the car, it is necessary to check whether the clock spring under the steering wheel and the universal joint inside the steering column are functioning normally. Wear or failure in these two components can lead to malfunction symptoms. 2. If the noise comes from outside the car, it is necessary to inspect whether the top bearings of the front shock absorbers are worn, whether the ball joints of the steering gear are loose, and whether the rack and pinion inside the steering gear are worn. Failure in any of these three components can cause malfunction symptoms in the vehicle.
When it comes to car squeaking, I've seen quite a few situations after driving for so many years. The most common reason is that the brake pads are worn too thin, causing the edges to rub against the disc and produce noise; or there are loose parts in the suspension system, like aging shock absorbers or damaged rubber bushings, which squeak when going over bumps. It's more noticeable in winter or rainy weather, as metal parts contract or get damp, amplifying the noise. Loose steering ball joints or tie rods can also squeak when turning. The belt system is another headache—aging alternator belts can squeak at different RPMs. Don't ignore this issue; get it checked at a professional repair shop as soon as possible. If the brakes fail, it could be dangerous.
I also enjoy tinkering with cars, and squeaking sounds are usually easy to diagnose. Check if the brake pads are worn or dirty—replace them if they're too thin, otherwise, the friction noise won't stop. Inspect the belt tension; if it's aged, it might squeak upon starting—tighten if loose, replace if cracked. For suspension components like ball joints or bushings, you can shake the tire by hand to test for looseness. Safety first—if you can't fix it yourself, it's best to consult a mechanic.
