What Causes Engine Idle Shaking and Stalling?
1 Answers
The reasons for engine idle shaking and stalling: 1. Severe engine carbon buildup. The most common cause of car shaking is a dirty throttle body or excessive carbon deposits in the fuel injectors. 2. Ignition system issues. Check the condition of the spark plugs, high-voltage wires, and ignition coils. Poor performance of the ignition system or weak spark plug firing can also lead to such malfunctions. 3. Unstable fuel pressure. If you've already cleaned the engine carbon buildup, throttle body, replaced gaskets and spark plugs, but still experience body shaking at idle, it's recommended to visit a 4S shop to check the fuel supply pressure and intake pressure sensor. Abnormal fuel pump pressure or incorrect readings/malfunction of the intake pressure sensor can cause body shaking. 4. Aging engine components. Car shaking can also be related to worn engine mounts (also known as engine cushions). Engine mounts essentially serve as the engine's vibration damping system, absorbing minor vibrations during operation. If the engine mounts fail, these vibrations will transfer to the steering wheel and cabin, causing shaking at idle.