What Causes Car Idle Shaking?

[DanteLynn]

Reasons for car idle shaking: 1. The throttle is dirty or the fuel injector has excessive carbon deposits. The solution is to clean the fuel system and check if the idle control valve has carbon buildup that needs cleaning; 2. Issues with the ignition system. The solution is to check if the spark plugs have excessive carbon deposits and replace them if necessary; 3. Unstable oil pressure. The solution is to check the oil pressure and replace components if needed; 4. Aging engine components. The solution is to replace the parts. Idle shaking refers to the engine shaking when idling and not functioning properly. In this case, the idle speed should be adjusted slightly higher. 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, the engine enters idle state. When adjusting the idle speed, the RPM should not fluctuate abruptly, as this may cause premature engine wear. It is recommended to have the adjustment performed at an automotive repair facility.