What Causes Engine Idle Vibration in Motor Vehicles?
1 Answers
Motor vehicle engine idle vibration can be caused by the following reasons: 1. Dirty air filter: The air filter is designed to protect the engine and reduce wear. Simply replacing the air filter can resolve this issue. 2. High-voltage line breakage: A high-voltage line breakage refers to the interruption of the conductor core in the high-voltage line, which can affect ignition and cause engine vibration. 3. Low idle speed: The engine idle speed value is preset in the computer. When the RPM drops below a certain range, the vehicle's computer will automatically adjust it. 4. Abnormal water temperature: High water temperature can lead to advanced ignition timing, changes in the air-fuel mixture ratio, thinning of engine oil viscosity, and reduced lubrication performance. 5. Clogged fuel injector: Impurities in gasoline can clog the injector nozzles, causing inconsistent fuel injection from each injector. This results in uneven cylinder operation and engine vibration.