What Causes Severe Engine Shaking and Illuminated Malfunction Light?
1 Answers
Severe engine shaking and an illuminated malfunction light are primarily caused by the following reasons: 1. A dirty throttle valve can cause idle shaking. 2. Faulty spark plugs can lead to vehicle idle shaking. 3. If one cylinder of the engine is not working, it can also cause idle shaking and result in vehicle shaking during low-speed acceleration. 4. Aging rubber components inside the engine mounts and transmission mounts can cause vehicle idle shaking. Of course, besides these four reasons, there are others, including: 1. Issues with the shock absorption system. Body shaking is also related to the aging of the shock absorption system. It is mainly responsible for filtering out the engine's vibrations during operation. If there is a problem with the shock absorption, these vibrations will be directly transmitted to the steering wheel and the cabin, affecting driving. When the engine is idling, turning on the vehicle's electrical systems can easily cause shaking. The engine's load increases when electrical systems are activated, leading to a drop in idle speed. To compensate for the shaking caused by the idle speed drop, the engine will automatically increase the RPM slightly. 2. Tire problems. For tires, when replacing them or installing new rims, a tire balance must be performed. Otherwise, if the weight distribution is uneven, the steering wheel may shake. If uneven weight distribution is detected, lead weights need to be added inside the rims to balance the weight distribution between the two sides of the tires. Whether it's standard steel rims or lightweight aluminum rims, they can deform or crack under certain external forces. Rim deformation can cause shaking while driving, uneven weight distribution in the rims can also lead to shaking, and incorrect rim angles can similarly result in shaking during driving.
