What Causes the Engine Shaking and Malfunction Light to Illuminate?

[Pinto]

The reasons for engine shaking and the malfunction light illuminating: Poor combustion of the engine's air-fuel mixture and abnormal fuel supply pressure can cause the engine malfunction light to illuminate and the vehicle to shake. When the engine malfunction light comes on and the vehicle starts to shake, it is necessary to stop immediately, call for a tow truck, and wait for assistance. The causes of this phenomenon include: Poor combustion of the engine's air-fuel mixture. When the mixture in the cylinder is too rich, the vehicle may experience knocking, shaking, and other symptoms. Abnormal fuel supply pressure and faults in the intake pressure sensor can also cause this. If the fuel pump supply pressure is abnormal or the intake pressure sensor values are incorrect or malfunctioning, it can lead to body shaking and insufficient power. Faults in the working condition of the spark plugs, high-voltage wires, and ignition coils, as well as poor performance of the ignition system or improper spark plug firing, can also result in the engine malfunction light illuminating, vehicle shaking, and insufficient power.