Check Engine Light Car Shakes When Accelerating

When your vehicle check engine light blinking, shaking and vibrating when accelerating, it can be an alarming event and is a sure indication there’s something amiss. And as soon as possible fix that issue and don’t try to speed up your car in this situation.

Common Causes of Check Engine Light Car Shakes When Accelerating

1.      Malfunctioning Cylinder

Malfunctioning Cylinder

When the cylinder does not work as expected or it does not pass the fuel and air every time the crankshaft turns, it misfires. As a result, the engine runs rough and it makes the overall car shaking.

2.      Spark Plugs

Spark Plugs

Spark plugs driven for more than 80,000 miles need to be replaced, this is another reason for car shaking while acceleration.

3.      Coils


Coils are responsible to produce the spark that the cylinder needs to fire whenever the crankshaft happens.

If you need more information about what other reasons for car shaking with engine light on then a complete article of about car shaking/vibrating and engine light on/blinking.

4.      Faulty Intake Manifold Gasket

Faulty Intake Manifold Gasket

Gaskets work as a seal and when the seal loses its ability, it makes the engine to overheat. Other than an overheating engine, if you can smell the coolant leak, it is a symptom that there is something wrong with the gasket.

How to Fix Engine Overheating

How to Start a Flooded Engine Carburetor

Reason for Shaking Without Check Engine Light Blinking

1.      Rear Driveshaft and U-Joints

Rear Driveshaft and U-Joints

Remove the driveshaft and feel the joint’s movement. Any rough patches there will be magnified when the engine runs with power.

2.      Bent Axle

Bent Axle

Even the slightest bend can be the reason for serious shaking, especially when the car speeds up. The surprising fact is even a minor fender-bender or a small bump in the road can lead to the twisting of the axle. Sometimes, the problem could be the result of a worn out CV joint that you will find at the end of the axle.

3.      Tires


A loose tire not only causes vibration but can also lead to major accidents.

Unbalanced tires could be another source of shaking. Tires that are out of balance or misaligned due to worn out tread or bad installation won’t let the vehicle to run straight on the road.

Maintenance Apps

4.      Steering Wheel

Steering Wheel

Tires are fine then you have to go for steering wheel, Loose or damaged wheel bearings could give your vehicle a good shake at higher speeds, however these parts are unlikely to wear out with time, it’s not impossible. So remember these when your car vibrates when accelerating. You may find damaged bearings in cars that have been driven extensively for many years.

5.      Stuck Brake Caliper

Stuck Brake Caliper

Not often, but could be the one for shaking while acceleration at a speed of 45 mph or more.

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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