VW Jetta Check Engine Light Blinking and Car Shaking
Overview
If your VW Jetta’s check engine light is blinking and the car is shaking, it’s a sign that something is seriously wrong. This could be caused by a number of different factors, including:
- Spark plug problems
- Ignition coil problems
- Fuel injector problems
- Vacuum leaks
- Transmission problems
- Engine problems
Causes
Spark plug problems
Spark plugs are responsible for igniting the air-fuel mixture in your engine’s cylinders. If a spark plug is faulty, it can cause the engine to misfire, which can lead to a blinking check engine light and car shaking.
Ignition coil problems
Ignition coils are responsible for providing the spark plugs with the high voltage they need to ignite the air-fuel mixture. If an ignition coil is faulty, it can cause the engine to misfire, which can lead to a blinking check engine light and car shaking.
Fuel injector problems
Fuel injectors are responsible for spraying fuel into your engine’s cylinders. If a fuel injector is faulty, it can cause the engine to run lean or rich, which can lead to a blinking check engine light and car shaking.
Vacuum leaks
Vacuum leaks can cause the engine to run lean, which can lead to a blinking check engine light and car shaking. Vacuum leaks can be caused by a number of different factors, including:
- Damaged vacuum hoses
- Loose vacuum connections
- Leaking gaskets
Transmission problems
Transmission problems can also cause the check engine light to blink and the car to shake. This is because the transmission is responsible for transferring power from the engine to the wheels. If the transmission is slipping or damaged, it can cause the engine to rev up and down, which can lead to a blinking check engine light and car shaking.
Engine problems
Engine problems can also cause the check engine light to blink and the car to shake. This is because the engine is responsible for powering the car. If the engine is not running properly, it can cause the car to shake and the check engine light to blink.
Symptoms
In addition to a blinking check engine light and car shaking, other symptoms of a problem that could cause these symptoms include:
- Engine misfiring
- Engine stalling
- Rough idling
- Reduced engine power
- Increased fuel consumption
Diagnosis
If your VW Jetta’s check engine light is blinking and the car is shaking, it’s important to have the problem diagnosed by a qualified mechanic. The mechanic will be able to use a diagnostic scanner to retrieve trouble codes from the car’s computer. These codes can help the mechanic identify the cause of the problem.
Repair
The repair for a blinking check engine light and car shaking will depend on the underlying cause of the problem. In some cases, the repair may be as simple as replacing a spark plug or ignition coil. In other cases, the repair may be more complex, such as repairing a vacuum leak or transmission problem.
Conclusion
If your VW Jetta’s check engine light is blinking and the car is shaking, it’s important to have the problem diagnosed and repaired as soon as possible. Ignoring the problem can lead to further damage to your car and could even be dangerous.
