Why does the car suddenly shake and the engine fault light come on?
2 Answers
The reasons for the car suddenly shaking and the engine fault light coming on are: 1. Oxygen sensor failure; 2. Poor engine maintenance; 3. Use of low-quality fuel; 4. Poor combustion of the air-fuel mixture; 5. Dirty air filter; 6. Air flow sensor failure; 7. Spark plug carbon buildup; 8. Damaged coolant temperature sensor; 9. Engine misfire. The methods to address the car suddenly shaking and the engine fault light coming on are: 1. Use fuel additives to clean the entire fuel system; 2. After cleaning the engine, use higher-grade gasoline; 3. Use high-quality fuel additives to improve fuel cleanliness; 4. Replace the catalytic converter.
The car suddenly started shaking and the engine malfunction light came on. As someone who frequently deals with cars, I believe this issue is most likely related to the engine system. Problems in the ignition system, such as aged spark plugs or excessive carbon buildup, can cause cylinder misfires, leading to severe body shaking. Fuel system issues like clogged fuel injectors or unstable fuel pump supply can also affect power output, causing engine vibrations. Air intake problems, such as vacuum tube leaks or sensor failures, can similarly trigger abnormalities. I remember the last time my car acted like this, it was due to an oxygen sensor issue causing an imbalance in the air-fuel mixture, which illuminated the warning light. In such cases, it's crucial to pull over and turn off the engine immediately to prevent further damage—you can perform a quick visual inspection of the spark plugs and fuel line connections, but avoid disassembling anything yourself. It's best to use a diagnostic tool to read the fault codes and then take the car to a professional repair shop for both safety and accuracy. Regular maintenance, including timely spark plug replacements, can help prevent such issues.
