What Causes the Idle Vibration in Roewe 350?
1 Answers
Here are the specific reasons for the idle vibration in Roewe 350: 1. Shock Absorber System Failure: The shock absorber system is primarily responsible for filtering out the vibrations generated by the engine during operation. If there is an issue with the shock absorbers, these vibrations will directly transmit to the steering wheel and the cabin, affecting driving. When the engine is idling, turning on the vehicle's electrical systems can also easily cause vibrations. The engine's load increases due to the activation of electrical components, leading to a drop in idle speed. To compensate for the vibration caused by the idle speed drop, the engine automatically increases the RPM. 2. Unstable Oil Pressure: Check whether the fuel supply pressure and the intake pressure sensor are functioning normally. If the fuel pump's supply pressure is abnormal or the intake pressure sensor's readings are incorrect or malfunctioning, it can cause body vibration. 3. Cold Start: The main reason for body vibration during a cold start is incomplete fuel combustion, resulting in insufficient power. The ignition energy is relatively low during startup, and when the temperature of fuel and lubricants is low, more throttle input is required to meet power demands. Over time, the spark plug's electrode gap gradually increases, leading to reduced ignition energy and poor fuel atomization, which causes body vibration. Additionally, aging ignition coils, high-voltage wires of spark plugs, or electrical leakage can also result in decreased ignition energy.
