Understand Why Your Hyundai Elantra’s Shakes and Quivers and How To Fix It

Shaking in your Hyundai Elantra can be disconcerting, but it’s a symptom that can often be decoded by looking into some common issues.

Image of Hyundai elantra
Hyundai Elantra [PHOTO COURTESY OF MOTOR1]
Let’s delve into the usual suspects that could be causing your vehicle to shake.

READ ALSO: Hyundai Ioniq Maintenance Guide. Hyundai Maintenance Plan

1.Misfiring Mayhem: Spark Plugs and Coil Packs

A misfiring engine is a leading cause of vehicular shakes.

Worn spark plugs or faulty coil packs disrupt the engine’s rhythm, leading to noticeable shaking, especially when the car is stopped or idling.

2.Mounting Concerns: Engine and Motor Mounts

The motor mounts are your car’s shock absorbers for the engine.

If they’re worn or damaged, they can’t do their job properly, resulting in vibrations that you can feel inside the cabin.

3.The Vacuum Leak Vexation

Vacuum leaks can lean out the air/fuel mixture, causing the engine to misfire and, consequently, the car to shake.

This issue might be accompanied by a hissing sound indicating the leak¹.

4.Fuel System Faults: Pressure Problems and Injector Issues

Elantra’s fuel system is vital for smooth operation.

Low fuel pressure or clogged injectors can starve the engine of fuel, leading to misfires and shaking.

5.Sensor Snares: Oxygen and Mass Airflow Sensors

Faulty sensors can send incorrect data to the engine control unit, causing an imbalance in the air/fuel mixture.

This imbalance often results in engine shaking.

6.When Wheels Wobble: Tire and Alignment Troubles

Sometimes the issue isn’t with the engine at all.

Unbalanced tires, misaligned wheels, or damaged suspension components can cause your Elantra to shake, particularly at higher speeds.

What should I do if my Elantra is shaking?

If your Hyundai Elantra is shaking, here are some recommended actions you can take to diagnose and address the issue:

1. Check for Diagnostic Trouble Codes (DTCs)

If the check engine light is on, start by pulling the DTCs. This can provide a clear indication of what might be wrong.

2. Inspect Spark Plugs and Coil Packs

These are common culprits for misfires, which can cause shaking. Consider replacing them if they are worn out.

3. Verify Motor Mounts

Worn or damaged motor mounts can lead to excessive engine vibrations. Have them checked and replaced if necessary.

4. Look for Vacuum Leaks

A vacuum leak can lean out the air/fuel mixture, leading to engine misfires. Listen for a hissing sound that might indicate a leak.

5. Fuel System Check

Ensure that the fuel pressure is adequate and that the fuel injectors are not clogged or dirty. A faulty fuel pump can also cause shaking due to misfires.

6. Sensor Inspection

Faulty oxygen, mass airflow, or crankshaft position sensors can disrupt the engine’s performance. Have these sensors checked and replaced if they are malfunctioning.

7. ire Pressure and Balance

Incorrect tire pressure and unbalanced wheels can cause your car to shake.

Check the tire pressure and have the wheels balanced if needed.

8. Suspension Components

Inspect the suspension for any signs of damage or wear that could contribute to shaking.

9. Regular Maintenance

Stick to a regular vehicle check-up schedule, service spark plugs and air filters as needed, and use good quality fuel.

If you’re not comfortable performing these checks yourself, it’s advisable to seek the assistance of a qualified technician.

How can I check the motor mounts myself?

Checking the motor mounts on your Hyundai Elantra can be done with a few steps.

Here’s a simplified guide to help you inspect them:

  1. Visual Inspection: Open the hood and visually inspect the motor mounts for any signs of wear, cracks, or damage.

Look for any broken rubber or metal components.

  1. Engine Movement Test:
    • Start the engine and let it idle.
    • Have someone shift the car from ‘Park’ to ‘Drive’ and back while you watch the engine movement.
    • A small amount of movement is normal, but excessive movement or clunking sounds could indicate a problem with the mounts.
  2. Physical Check:
  3. Underneath Inspection:
    • Safely lift the car using a jack and secure it on jack stands.
    • Inspect the mounts from underneath for any signs of separation or deterioration.

Remember, if you’re not comfortable performing these checks or if you find any issues, it’s best to consult with a professional mechanic.

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