What are the causes of idling vibration when in D gear?
1 Answers
Excessive carbon buildup can cause idling vibration when in D gear. Reasons for engine idling vibration: Severe carbon deposits in the engine cylinders can lead to spark plug blockage and valve blockage, which directly causes the car to vibrate during idling. Fuel supply system issues with unstable oil pressure can easily result in unstable mixture concentration, leading to vibration and unstable idling. Solutions for idling vibration: If the engine carbon has been cleaned, the throttle body washed, and the oil pads and spark plugs replaced, but the car still vibrates during idling, unstable oil pressure might be the cause, and a professional should be consulted for inspection. Check the condition of the spark plugs, high-voltage wires, and ignition coils.