Why is the car vibrating severely?
2 Answers
The reasons for severe car vibration: 1. Severe engine carbon deposits: After driving for a certain mileage, the throttle valve may not close properly or the motor may get stuck due to excessive dirt, causing high engine idle speed. The carbon deposits generated during this process lead to vehicle vibration, especially when starting the car, the engine will vibrate more severely than normal. It is necessary to clean the carbon deposits in time. 2. Ignition system problems: When starting a cold engine, it requires a richer air-fuel mixture, which demands higher ignition energy. If the spark plug gap is too large, or the ignition coil and high-voltage coil are aged, the ignition energy may decrease, causing the car body to shake. The spark plugs and cylinder wires should be checked and adjusted or replaced if necessary. 3. Unstable oil pressure: Abnormal fuel pump supply pressure or incorrect intake pressure sensor readings can also cause car body vibration. The owner should remember to check the oil pressure and replace parts if necessary. 4. Shock absorption system: The engine mount is actually the shock absorption system of the engine. If there is a problem with the engine mount, these vibrations will be transmitted to the steering wheel and the interior of the car, causing vibration at idle speed.
I've found that when the car vibrates particularly violently, it's mostly due to tire issues. It could be unbalanced tires causing uneven wheel rotation, which becomes more noticeable at high speeds. Or problems like tire bulges/deformation, incorrect tire pressure (either too high or too low) can also cause shaking. Back when I encountered this during long-distance driving, I'd pull over to check tire pressure or inspect for wheel misalignment. Actually, damaged wheel hub bearings or loose suspension components can also make the car bump continuously - you'll even feel it straining through the steering wheel. In severe cases, it damages the vehicle and poses safety risks. My advice: if you experience similar symptoms, get your tires balanced and alignment checked immediately - don't delay until major repairs are needed.
