What Causes Engine Shaking and the Malfunction Indicator Light to Illuminate?

[KarterLynn]

When the engine malfunction indicator light comes on and the vehicle starts to shake, it is necessary to stop immediately and call for a tow truck to await rescue. The causes of this phenomenon include: 1. Poor combustion of the air-fuel mixture in the engine. When the mixture in the cylinder is too rich, the vehicle may experience knocking, shaking, and other symptoms. 2. Abnormal fuel supply pressure or a malfunctioning intake pressure sensor. If the fuel pump's supply pressure is abnormal or the intake pressure sensor provides incorrect readings or performs poorly, it can lead to body shaking and insufficient power. 3. Faulty operation of the spark plugs, high-voltage wires, or ignition coils. Poor performance of the ignition system or improper spark plug firing can also cause the engine malfunction light to illuminate, along with vehicle shaking and power loss.