What Causes Idle Vibration in Nissan Sylphy?

[McNadia]

Nissan Sylphy idle vibration can be attributed to the following reasons: Suspension System Malfunction: The suspension system is primarily responsible for filtering out engine vibrations during operation. If there is an issue with the suspension, these vibrations will be directly transmitted to the steering wheel and the cabin, affecting driving comfort. Unstable Oil Pressure: Check whether the fuel supply pressure and the intake pressure sensor are functioning properly. If the fuel pump supply pressure is abnormal or the intake pressure sensor values are incorrect or malfunctioning, it can lead to vehicle vibration. Cold Start: The main reason for vehicle vibration during a cold start is insufficient fuel combustion, resulting in inadequate power output. Low ignition energy means that during startup, when fuel and lubricant temperatures are low, more throttle input is required to meet power demands. Over time, the electrode gap of the spark plug gradually increases, leading to reduced ignition energy and poor fuel atomization, which in turn causes vehicle vibration.