Why is My Check Engine Light Blinking and Car Shaking?: 1 Minute to Diagnose Your Car's Issues

If your check engine light is blinking and your car is shaking, it’s a sign that your vehicle has a severe engine misfire that requires immediate attention. A blinking light is much more urgent than a steady check engine light—it indicates a problem that could quickly damage your engine or catalytic converter. Common causes include faulty spark plugs, ignition coils, fuel system issues, or even a mechanical problem like a damaged piston or valve. The shaking, or vibration, comes from the engine not firing properly and can be felt throughout the car, especially at idle or under acceleration. To avoid expensive repairs and ensure safety, it’s highly recommended to stop driving and have your car inspected by a mechanic as soon as possible.

Tips 1:

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FAQ

Q: What does a blinking check engine light mean?

A: It indicates a severe engine misfire that could cause damage if you continue driving.

Q: Is it safe to drive with the check engine light blinking?

A: No, driving with a blinking check engine light can result in further engine damage and expensive repairs.

Q: Can low fuel cause the check engine light to blink and car to shake?

A: While low fuel rarely causes these symptoms, issues with fuel delivery can lead to both.

Q: Should I try to diagnose a blinking check engine light myself?

A: Unless you have experience, it’s best to seek a professional mechanic for accurate diagnostics and repair.

Q: What should I do immediately if my car shakes and the check engine light blinks?

A: Safely pull over, stop the engine, and consult a mechanic or roadside assistance as soon as possible.