Why is my check engine light blinking and car shaking?

Possible causes

There are several possible causes for a blinking check engine light and car shaking. Some of the most common include:

Misfiring engine: A misfiring engine can cause the car to shake and the check engine light to blink. This can be caused by a variety of problems, such as faulty spark plugs, ignition coils, or fuel injectors.
Vacuum leak: A vacuum leak can also cause the car to shake and the check engine light to blink. This can be caused by a variety of problems, such as a cracked or loose vacuum hose.
Faulty oxygen sensor: A faulty oxygen sensor can cause the car to run rich or lean, which can lead to shaking and a blinking check engine light.
Catalytic converter problems: A clogged or damaged catalytic converter can cause the car to shake and the check engine light to blink.
Transmission problems: Transmission problems can also cause the car to shake and the check engine light to blink. This can be caused by a variety of problems, such as a slipping transmission or a faulty torque converter.

What to do if your check engine light is blinking and your car is shaking

If your check engine light is blinking and your car is shaking, it is important to have the problem diagnosed and repaired as soon as possible. Continuing to drive with a blinking check engine light can damage your car’s engine and other components.

Here are some steps you can take if your check engine light is blinking and your car is shaking:

Pull over to a safe location and turn off your engine. This will help to prevent further damage to your car.
Check the owner’s manual for your car. The manual may provide some information about what the blinking check engine light means and what to do.
Call a tow truck or have your car towed to a mechanic. A mechanic will be able to diagnose the problem and repair your car.

Preventing check engine light problems

There are several things you can do to help prevent check engine light problems, including:

Regular maintenance: Regular maintenance, such as oil changes and tune-ups, can help to keep your car running smoothly and prevent check engine light problems.
Use high-quality fuel: Using high-quality fuel can help to prevent problems with your car’s fuel system, which can lead to check engine light problems.
Avoid driving in harsh conditions: Driving in harsh conditions, such as extreme heat or cold, can put a strain on your car’s engine and other components, which can lead to check engine light problems.

By following these tips, you can help to prevent check engine light problems and keep your car running smoothly.