What Causes the Malfunction Light to Flash, Engine to Shake, and Lack of Power When Accelerating?

[SanEmiliano]

Malfunction light flashing, engine shaking, and lack of power when accelerating indicate poor combustion of the air-fuel mixture in the engine. When the mixture in the cylinder is too rich, the vehicle may experience knocking and shaking; when the mixture is too lean, the vehicle may exhibit poor acceleration. If the issue is not related to the air-fuel mixture, it could be due to faulty spark plugs, high-voltage wires, or ignition coils. Poor performance of the ignition system or inadequate spark plug firing can also cause the engine malfunction light to illuminate. Engine maintenance precautions include: Do not blindly remove the engine thermostat. Removing the thermostat due to high engine temperature will cause the coolant to circulate only in a large loop, unable to regulate cooling intensity, making it difficult to ensure the engine operates at an appropriate temperature.