What are the reasons for occasional shaking during car idling?
1 Answers
There are several reasons for vehicle shaking during idling, including unstable oil pressure, severe carbon deposits, ignition system issues, aging engine components, poor spark plug performance, and air intake system leaks. The specific explanations are as follows: 1. Unstable oil pressure: Abnormal fuel pump supply pressure or incorrect readings from the intake pressure sensor can cause body shaking. Remember to check the oil pressure and replace components if necessary. 2. Severe engine carbon deposits: After driving a certain mileage, a dirty throttle can lead to incomplete closure or motor stalling, causing the engine to idle too high. The carbon deposits generated during this process result in vehicle shaking, especially when starting the car, where the engine may shake more than usual. It is important to clean carbon deposits promptly. 3. Ignition system issues: During cold starts, the engine 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 aging, it can reduce ignition energy, causing the vehicle to shake. Check the spark plugs and cylinder wires, and replace components if needed. 4. Aging engine components: Car shaking can also be related to aging engine mounts. Engine mounts are essentially the engine's shock absorption system, responsible for absorbing minor vibrations during operation. If the engine mounts are faulty, these vibrations can transfer to the steering wheel and cabin, causing shaking during idling.
