Severe Engine Shaking and Malfunction Light On?
2 Answers
Severe engine shaking and the malfunction light turning on are caused by issues such as problems in the ignition system, poor fuel quality, and excessive carbon deposits inside the engine. Below are the solutions for severe engine shaking and the malfunction light turning on: 1. Clean carbon deposits: The car owner should first clean the carbon deposits in the engine. They can use a cleaning agent to do it themselves or go to a 4S shop for cleaning. 2. Replace fuel: Change the fuel, opting for higher-grade and higher-quality fuel. 3. Replace sensors: Abnormal fuel supply pressure and faulty intake pressure sensors can cause car shaking and the malfunction light to turn on, so the sensors should be replaced promptly.
Last time I encountered this situation too, the entire steering wheel was shaking when starting up, and the fault light was glowing yellow. This is most likely an issue with the ignition system. Worn-out spark plugs are the most common cause of cylinder misfire shaking, or the ignition coil might be burnt out—that’s how my car got fixed. Also, pay attention to whether the shaking has a rhythmic vibration; if so, it could be due to cracked engine mounts causing damping failure. The fuel system often acts up too—unstable fuel pump pressure or clogged fuel injectors can disrupt the air-fuel mixture ratio. A word of advice: don’t force it to run. My friend ignored it and ended up spending thousands on an engine overhaul. I suggest checking the OBD fault codes first; most auto repair shops offer free diagnostics.
