Why does the car body shake?
2 Answers
The reasons for car body shaking: 1. Excessive carbon deposits on fuel injectors and throttle body or dirty throttle: It's necessary to clean the fuel injectors and throttle body. If the throttle is too dirty, clean and replace the air filter; 2. Faults caused by car tires: It's required to check tire pressure, tire wear, shock absorbers and other components. It's best to perform wheel alignment and dynamic balancing; 3. Abnormal fuel supply system and ignition system: It's necessary to check whether the intake pressure sensor, fuel supply pressure, spark plug firing, etc. are normal; 4. If none of the above issues are found, it means there's a problem with the car body components. Check whether the engine mounts, rubber ball joint covers, and engine mounting parts are loose or worn out. Excessive brake pad wear can also cause shaking when locking the car, requiring brake pad replacement.
I find that car body shaking is actually quite common, mainly due to unbalanced tires. When the weight distribution of the tires is uneven, high-speed driving can cause the steering wheel and the entire body to shake, affecting driving stability. It could also be caused by improper wheel alignment—if the wheel angles are off, the car won’t drive straight and is prone to shaking. Suspension system issues are another problem, such as worn shock absorbers or loose ball joints, which can significantly increase vibrations when going over speed bumps. Sometimes, warped brake rotors or aged, loose engine mounts can also transmit vibrations. It’s recommended to start with simple checks, like getting a professional tire balance and alignment adjustment, as these are easier to fix. If the problem persists, then the suspension or drivetrain system should be inspected. Early detection and repair can prevent safety hazards, as severe shaking may wear out other components.
