Why does the car shake when driving?
4 Answers
The reasons why the car shakes when driving: The throttle valve is too dirty or the fuel injector has excessive carbon deposits. When there is too much carbon buildup inside the engine, the gasoline sprayed by the cold start injector will be largely absorbed by the carbon deposits, resulting in an overly lean air-fuel mixture during cold starts, making it difficult to start and causing the car to shake when driving. Under these conditions, the car will only start easily once the carbon deposits have absorbed enough gasoline to become saturated. After starting, the gasoline adsorbed on the carbon deposits will be sucked into the combustion chamber by the engine's vacuum suction force and burned, which in turn enriches the air-fuel mixture. The engine's combustible mixture alternates between being too lean and too rich, leading to idle shaking after a cold start. If the three factors—fuel, air, and spark—are obstructed or not functioning smoothly, the engine's operation will also become unstable, resulting in shaking.
I've been driving for many years, and the most common cause of shaking is tire issues, such as uneven tire pressure, uneven tire wear, or poor balancing, especially when the car wobbles severely at high speeds. Suspension system problems are also a major cause; after the shock absorbers leak, the body jolts when going over bumps. Engine ignition system failures, such as aging spark plugs or a clogged fuel pump, can make the engine run unevenly, transmitting vibrations throughout the car. A bent drive shaft or uneven brake discs can also cause shaking during acceleration or braking. In such cases, I recommend first checking the tire pressure and balancing the tires. If the problem persists, promptly visit a professional repair shop to inspect the suspension and engine. Long-term neglect can exacerbate wear and tear, potentially leading to major accidents. Safety is no small matter, so it should be addressed immediately. Developing a habit of regular maintenance can prevent problems before they arise, such as checking wheel alignment annually, which makes driving much smoother.
I don't drive much as a young person, but when the car shakes, it's quite annoying. The tires seem the most suspicious – worn-out or uneven tire pressure can cause noticeable vibrations, especially when turning or going uphill. Engine issues might also be the culprit, like faulty ignition coils causing jerky movements. Loose suspension shock absorbers can make the car sway violently over speed bumps, which is both exhausting and dangerous for long drives. In summer, with large temperature differences, tire pressure changes quickly, making shaking more likely. Worn transmission parts, like universal joints, can cause more intense shaking during acceleration, and uneven brake rotors are also common. When I notice shaking, I stop to check tire pressure and wear, adjusting the balance if necessary. If that doesn't help, I head to the repair shop promptly to avoid further damage. For prevention, I clean the engine and tires more often during seasonal changes to maintain good car condition, saving on repairs and ensuring safe, enjoyable driving.
As a frequent family car user, I highly value driving safety, and it worries me when the car shakes with my child on board. Common issues often stem from the braking system, such as warped brake discs causing sudden braking vibrations. Tire imbalance is also a frequent culprit, leading to severe shaking at high speeds. Engine problems like an improper air-fuel ratio can make the car unstable and bumpy. Aging suspension components, such as leaking shock absorbers, result in significant swaying over bumps. If you notice shaking, first slow down and check tire pressure balance, then seek professional inspection if necessary. Don't take risks—promptly repair critical components and perform regular maintenance to avoid trouble and ensure safe family trips by preventing potential hazards.
