What Causes Car Idle Vibration?

[MacJoy]

Car idle vibration may be caused by severe engine carbon deposits, ignition system issues, unstable oil pressure, aging engine components, etc. Excessive dirt in the engine, idle motor, throttle valve, or carbon deposits in the fuel injectors can lead to this issue. The solution is to clean the fuel system and check whether the idle motor has carbon deposits that need cleaning. Problems in the ignition system can be resolved by checking if the spark plugs have excessive carbon deposits and replacing them if necessary. Unstable oil pressure requires checking the oil pressure and replacing components when needed. Aging engine components should be replaced at a repair shop. Idle state refers to a working condition when the engine is running without load. When the accelerator pedal is fully released while the engine is running, it enters the idle state. Adjusting the idle speed should not be too high or too low, as it may cause premature engine wear. It is recommended to have the adjustment performed at an automotive repair facility.