2024 Hyundai Palisade Has Rough Idle

Diagnosing the Causes of Rough Idling in Your 2024 Hyundai Palisade and How to Resolve Them

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
21% chance it's the
Spark Plugs
0%
15% chance it's the
Ignition Coil
0%
64% chance it's
Something else
The most common reasons a 2024 Hyundai Palisade has rough idle are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.
  • Spark Plugs: Worn or fouled spark plugs can lead to misfires, poor fuel economy, and difficulty starting the engine.
  • Ignition Coil: A faulty ignition coil can cause misfires, rough idling, and difficulty starting the engine due to inadequate spark delivery to the spark plugs.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2024 Hyundai Palisade has rough idle?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Brake caliper failure occurs in two different ways, and they create different symptoms.

The caliper can become stuck, in which case it won't release the brake pads. The seized caliper will cause the vehicle to brake constantly on one side, forcing the car to move toward that side. This pulling will be accompanied by a strong odor from one wheel.

Another way calipers fail is by leaking. If the caliper leaks, the brake pedal will feel too easy to push, and will sink all the way to the floor when held. Braking will become less effective the longer this goes on. There may also be brake fluid leaking onto the wheel.

Here are a few common symptoms of worn-out brake pads:

  1. Low brake pad warning light is on: Not all vehicles are equipped with this system, but if yours is, this dashboard indicator light will likely be the first signal it’s time to replace your brake pads.
  2. Brakes start to squeal regularly: This is often one of the first signs of worn brake pads and is caused by a metallic piece built into brake pads for this exact purpose. This part contacts the brake rotor to make a squealing or whining noise when the pads are low.
  3. Brakes make loud grinding noise: If not addressed early enough, your brake pads may get so worn that the metal backing plate of the pad grinds against the metal rotor.
  4. Brake pads look thin: You may be able to visually check your brake pad thickness to determine if they need replacement.

Brake rotors are mainly maintenance free, but when they have been subjected to abnormally hard use, the heat they absorb can cause the metal to turn blue, and cracking to occur. When this occurs, customers often specify they have lost braking power, or the vehicle's brakes are making noise. There may be no symptoms at all related to changing the brake rotors, since it is recommended to change brake rotors on most modern vehicles when performing a standard brake service.

Most often, a brake system inspection will just be a routine portion of manufacturer specified maintenance, and will be performed at mileage intervals. In those cases, there will likely be no symptoms. However, when a brake system makes a funny noise, causes vibration, is hard to use, will not slow the vehicle, prevents the vehicle from driving, makes the vehicle pull to one side, or leaks brake fluid, the vehicle will need a visit dedicated to the inspection of the brake system.

What are the initial diagnostic steps to take for a rough idle in a 2024 Hyundai Palisade?

When faced with a rough idle in your 2024 Hyundai Palisade, start by checking the spark plugs, as worn or damaged plugs can significantly affect engine performance. Next, inspect the air filter; a clogged filter can restrict airflow, leading to an unstable idle. It's also crucial to examine the fuel system, including the fuel injectors and filter, to ensure they are functioning correctly. Utilizing an OBD-II scanner can help you identify any error codes that may indicate specific problems. Additionally, take a look at the throttle body; cleaning it can often improve idle quality if it’s dirty. Don’t forget to check for vacuum leaks, as these can disrupt the air-fuel mixture, causing rough idling. Lastly, verify the mass airflow sensor, since a malfunctioning sensor can lead to incorrect air measurements and idle issues. By systematically addressing these areas, you can effectively diagnose and potentially resolve the rough idle in your vehicle.

What are the common problems that could cause a rough idle in a 2024 Hyundai Palisade?

When dealing with a rough idle in your 2024 Hyundai Palisade, it's essential to understand the common problems that could be at play. One of the first areas to check is the air filter; a dirty or clogged filter can significantly restrict airflow to the engine, disrupting the air-fuel mixture and resulting in an uneven idle. Additionally, inspect the spark plugs, as worn or faulty plugs can lead to incomplete combustion, further contributing to rough idling. Another critical area to examine is the vacuum system for any leaks, which can throw off the air-fuel ratio and cause instability in engine performance. Fuel system issues, such as a clogged fuel filter or a malfunctioning fuel pump, can also impact how smoothly your engine runs. Don't overlook the oxygen sensor, as a malfunction here can cause the engine to run either too rich or too lean, both of which can lead to rough idling. Furthermore, problems within the ignition system, including faulty ignition coils, can exacerbate the situation. Lastly, a dirty or malfunctioning throttle body can disrupt airflow, and engine misfires—often linked to ignition or fuel system issues—can create noticeable roughness during idle. By systematically checking these components, you can identify and potentially resolve the underlying causes of a rough idle in your vehicle.

How urgent is it to address the rough idle in my 2024 Hyundai Palisade?

Addressing a rough idle in your 2024 Hyundai Palisade is essential for maintaining the vehicle's performance and safety. A rough idle can be indicative of various underlying issues, such as problems with the engine, fuel delivery, or ignition system. If these issues are not addressed promptly, they can lead to more severe complications, including costly repairs and decreased fuel efficiency, which can strain your budget over time. Additionally, a rough idle can compromise your vehicle's reliability, posing safety risks while driving. Therefore, it is crucial to take immediate action when you notice this symptom. By prioritizing the resolution of a rough idle, you not only enhance the longevity of your Hyundai Palisade but also ensure a smoother and safer driving experience.

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2024 Hyundai Palisade Rough Idle: Causes & Repair Options