1. Engine Misfire: A misfire occurs when one or more cylinders in the engine are not firing properly. This can cause the engine to run rough and shake, and the MIL will come on to indicate that there is a problem.
2. Faulty Ignition System: Problems with the ignition system, such as a bad spark plug or ignition coil, can also cause the engine to misfire and the MIL to come on.
3. Fuel System Issues: A malfunctioning fuel injector, fuel pump, or fuel filter can also cause the engine to run rough and the MIL to come on.
4. Transmission Problems: Issues with the transmission, such as a slipping or damaged clutch, can cause the car to shake and the MIL to come on.
5. Electrical Problems: Faulty electrical components, such as a bad alternator or battery, can also cause the car to shake and the MIL to come on.
6. Catalytic Converter Issues: A clogged or damaged catalytic converter can cause the engine to run inefficiently and the MIL to come on.
7. Oxygen Sensor Problems: A faulty oxygen sensor can cause the engine to run rich or lean, which can lead to shaking and the MIL coming on.
8. EVAP System Malfunction: Problems with the evaporative emissions (EVAP) system, which controls fuel vapors, can also cause the MIL to come on.
9. Loose or Damaged Components: Loose or damaged engine or transmission components can also cause the car to shake and the MIL to come on.
If the MIL comes on and the car starts shaking, it's important to take it to a qualified mechanic for diagnosis and repair. The shaking could be a symptom of a serious problem that, if left unaddressed, could lead to further damage or even a breakdown.