What Are the Solutions for Rapid Car Shaking?
2 Answers
Here are specific solutions for car idle shaking: 1. Clean the carbon deposits on the throttle valve and fuel injector. When there is excessive carbon buildup inside the engine, the gasoline sprayed by the fuel injector during a cold start can be largely absorbed by the carbon deposits, resulting in an overly lean air-fuel mixture and making it difficult to start. In this situation, the engine 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 drawn into the engine cylinders for combustion, making the air-fuel mixture too rich. The fluctuating lean and rich mixtures will cause idle shaking after a cold start. The lower the temperature, the more fuel is needed for a cold start, and the presence of carbon deposits will further affect the cold start. 2. The solution is to check whether the ignition system has any faults and whether the spark plugs have excessive carbon buildup. Replace the spark plugs promptly if necessary. If the ignition system is not functioning properly or the spark plugs are not igniting effectively, it can also lead to engine idle shaking. 3. The solution is to inspect the relevant components and replace them in a timely manner. If you have already cleaned the engine carbon deposits, cleaned the throttle valve, or replaced the spark plugs but the issue of car body shaking during idle persists, it is recommended to visit a 4S shop to check whether the fuel supply pressure and intake pressure sensor are functioning normally. If the fuel pump supply pressure is abnormal or the intake pressure sensor values are incorrect, it can also cause car body shaking during idle.
Last time when I was driving on the highway, my car suddenly started shaking violently, which scared me so much that I immediately pulled over to check. This kind of shaking is usually related to the tires, possibly due to an issue with the wheel balance—missing wheel weights on the rims can cause this. Another common reason is a fault in the engine's ignition system; spark plugs should be replaced every three to four years. The last time my car shook, replacing a set of new spark plugs solved the problem. If the shaking gets worse during acceleration, it might be due to a worn driveshaft or issues with the half-shaft. The safest approach is to conduct a full vehicle inspection, including checking the steering wheel and brake discs, as safety is the top priority. If you encounter such a situation, don't push through—getting it checked by a professional mechanic is definitely the right move.
