2014 Hyundai Santa Fe Sport Has Rough Idle

Resolve Rough Idle in 2014 Hyundai Santa Fe Sport for a Smoother Ride

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Reviewed by
Aisha
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 2014 Hyundai Santa Fe Sport 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 2014 Hyundai Santa Fe Sport 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.

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.

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 2014 Hyundai Santa Fe Sport?

When addressing a rough idle in your 2014 Hyundai Santa Fe Sport, it's essential to adopt a methodical diagnostic approach. Start by checking for fault codes using an OBD-II scanner, as these codes can reveal specific issues affecting engine performance. Next, inspect the spark plugs for wear or fouling, as these components play a crucial role in engine combustion. A clean air filter is also vital; ensure it is free from dirt and debris to maintain proper airflow. Additionally, examine the vacuum hoses for leaks, which can disrupt the air-fuel mixture and lead to idle problems. Don't overlook the throttle body; cleaning it of any carbon buildup can enhance its functionality. Finally, assess the fuel system, including the fuel filter and injectors, to confirm that fuel delivery is optimal. By following these steps, you can effectively diagnose and address the rough idle issue, ensuring your vehicle runs smoothly.

What are the common causes of a rough idle in a 2014 Hyundai Santa Fe Sport?

When dealing with a rough idle in a 2014 Hyundai Santa Fe Sport, it's essential to understand the common problems that could be at play. One of the primary culprits is a dirty or clogged air filter, which can significantly restrict airflow to the engine, leading to performance issues. Additionally, faulty spark plugs are notorious for causing misfires, which can manifest as a rough idle. Another potential issue is vacuum leaks; these can disrupt the delicate balance of the air-fuel mixture, resulting in an unstable idle. Fuel system problems, such as clogged fuel filters or injectors, can also hinder engine performance and contribute to rough idling. Furthermore, a malfunctioning mass airflow sensor can throw off the air-fuel mixture, exacerbating the issue. Lastly, don't overlook the Exhaust Gas Recirculation (EGR) valve, as a faulty EGR can interfere with the combustion process, leading to rough idling. By systematically checking these components, you can effectively diagnose and address the rough idle in your vehicle.

How urgent is it to address the rough idle in my 2014 Hyundai Santa Fe Sport?

Addressing a rough idle in your 2014 Hyundai Santa Fe Sport is not just a matter of comfort; it is crucial for the vehicle's overall performance and safety. A rough idle can indicate serious underlying issues such as faulty spark plugs, fuel system malfunctions, or air intake problems. Ignoring these symptoms can lead to decreased fuel efficiency and may escalate into more severe engine damage or stalling, which poses safety risks on the road. Timely intervention not only helps in maintaining optimal engine performance but also prevents costly repairs in the future. Regular maintenance and prompt attention to any irregularities can significantly extend the lifespan of your vehicle, ensuring that it runs smoothly and efficiently. Therefore, if you notice a rough idle, it is essential to address it as soon as possible to safeguard your vehicle's health and your safety.

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