What are the reasons for a car shaking while driving?
3 Answers
The reasons for a car shaking while driving are: 1. Severe engine carbon deposits, which absorb the gasoline sprayed by the cold start injector, resulting in a lean air-fuel mixture and making it difficult to start; 2. Ignition system issues, such as malfunctioning spark plugs; 3. Unstable oil pressure, abnormal fuel pump supply pressure, or incorrect readings and malfunctioning of the intake pressure sensor; 4. Aging engine components, where worn engine mounts fail to absorb minor vibrations during operation; 5. Significant differences in tire pressure, leading to uneven force distribution while driving. The solutions for a car shaking while driving are: 1. Clean the fuel system and check the idle speed motor for carbon deposits; 2. Inspect and replace spark plugs if necessary; 3. Check the oil pressure and replace components as needed.
I've experienced several instances of car shaking, which I feel may stem from multiple factors. The most common starts with the tires - unbalanced or misaligned tires can cause the entire vehicle to wobble while driving, especially more noticeable at high speeds. Next is uneven tire pressure; having one side higher than the other easily leads to shaking. Additionally, severely worn tires or foreign objects puncturing them can also create an unbalanced sensation. Engine ignition system issues are also frequent, such as aging spark plugs or faulty ignition coils, causing unstable engine operation and increased shaking. Regarding the suspension system, failed shock absorbers or loose control arms can weaken the vehicle's stability, making it more noticeable when going over speed bumps. In the braking system, warped or uneven brake discs cause more intense shaking during sudden braking. I recommend car owners start with simple tire checks and, if necessary, visit a professional shop for a comprehensive diagnosis to prevent potential hazards from escalating.
Last time my car was shaking violently on the highway, which scared me into taking immediate action. Unbalanced tires were the prime suspect, especially the shaking caused by forgetting to do dynamic balancing after changing new tires. Other common causes include uneven tire pressure, where significant shaking occurs when left and right wheels are inconsistent; or wheel hub bearing wear causing severe wobbling during turns. In the engine department, old spark plugs may cause unstable idle shaking; suspension components like worn shock absorbers can exacerbate body undulation. Simple solutions: check tire pressure consistency yourself with a tire pressure gauge, or go to a shop for a wheel dynamic balance test. Don't delay any longer, it affects control safety.
