Why Is My Car Shaking And Check Engine Light On?

If this Check Engine Light blinks constantly instead of flashing slowly, rather than one that can be stopped and shaking/vibrating it reflects a more severe concern. But it’s still a smart decision to take the car to a specialist. You should still have clarification about why is my car shaking and check engine light is on?.

Additionally, these are the direct explanation for car shaking with engine light on, but car shaking might occur from other causes that are detailed in car shaking while accelerating.

Here are the Common Reasons of Why Is My Car Shaking and Check Engine Light On?

  • Faulty spark plugs
  • Poor fuel pressure
  • Misfire
  • Faulty intake manifold gasket
  • Faulty Ignition Coil

Faulty spark plugs

Why Is My Car Shaking And Check Engine Light On?

In most cases, these plugs perform well for up to 100,000 miles and if you don’t change them early, they will possibly cause a problem with the operation of the valve. Faulty spark plugs also cause misfire and car vibrating or shaking in times of acceleration and in low speed.

Code: P0171 

Poor fuel pressure & Misfire

Why Is My Car Shaking And Check Engine Light On?

Although the poor fuel pressure occur from many other reasons such as (leaking fuel, fuel pump efficiency reduced or faulty, engine won’t start, loud Nosie in fuel pump) but here we only discussed the related matter of car shaking with engine light on so If your car’s engine stalls while running, it is a clear sign you are having some problems with your fuel pump. This is possibly because the engine is not receiving the correct amount of fuel to maintain combustion.

faulty Misfire code: P300

Today’s electronic cars have a fuel pressure sensor that intelligently calculates if anything is going wrong. If it is, the sensor triggers the check engine light prompting you to get your fuel system checked. Generally, with such a problem you will get a P0190 code accompanying your problem. If the check engine light occurs, you should read the trouble codes with a diagnostic scanner to find out what the problem is.

A low-pressure fuel system will destroy the spark plugs that ignite the fuel in an engine’s cylinder. If by chance you are replacing them and you find they are worn out before their time, you might be looking at a problem with your fuel system.

Faulty Ignition Coil

Why Is My Car Shaking And Check Engine Light On?

Coils are responsible for producing the spark that, once the crankshaft appears, the cylinder needs to fire. But you can get a repairer inspect the coil too and go for the replacement if appropriate.

Code: P0351 

Faulty intake manifold gasket

A defective intake manifold gasket may be the third cause on car shakes while driving and testing engine light is on. These gaskets act as a seal and allow the engine to overheat whenever the seal loses its energy. Other than an overheating engine, it is a warning that there is something wrong with the gasket if you can detect the coolant leak.

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What Are Your Options When Car Shaking And Check Engine Light On?

You have a number of options. You can take your car to your local dealership, and have them do a full diagnosis. Usually, dealerships have extensive knowledge of vehicles. For example, Chevy Cobalt know their cars very well; so, that is a great option.

There are also several retail stores selling in diverse models, such as Acura, Chevy, Dodge, Ford, Honda, Hummer, Jeep, Nissan, Subaru, Toyota, GMC, etc. For a complete diagnosis, you can also drive your car to certain stores. Purchasing your own OBD-II scanner and performing a DIY is the third choice you should agree on.

You should always find out the reason behind your check engine light flashing. If you are well-informed, then self-diagnosis is a great option. Self-diagnostic systems of nowadays are very advanced, and they do more than typical monitoring operations.

About The Author

Avatar for Ibrar Ayyub

Ibrar Ayyub

I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.

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