2025 Kia Telluride Has Rough Idle

Diagnosing Causes of Rough Idle in Your 2025 Kia Telluride and Solutions for a Smoother Ride

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Reviewed by
Devin Cabugcal
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 2025 Kia Telluride 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.

What are the initial diagnostic steps to take for a rough idle in a 2025 Kia Telluride?

When faced with a rough idle in your 2025 Kia Telluride, it's essential to adopt a systematic diagnostic approach to identify the root cause effectively. Start by checking the spark plugs, as worn or faulty plugs can significantly impact engine performance. Next, inspect the air filter; a clogged filter can restrict airflow, leading to an uneven idle. Following this, examine the fuel system components, including the fuel injectors and filter, to ensure they are functioning correctly, as any malfunction here can contribute to idling issues. Utilizing an OBD-II scanner to check for error codes can provide insights into any underlying problems that may not be immediately visible. Additionally, look for vacuum leaks in hoses and connections, as these can disrupt the air-fuel mixture essential for smooth engine operation. Finally, don’t overlook the throttle body; a buildup of dirt or malfunction can hinder air intake, exacerbating idle issues. By methodically working through these steps, you can effectively diagnose and address the rough idle in your vehicle, ensuring a smoother driving experience.

What are the common problems that could cause a rough idle in a 2025 Kia Telluride?

When diagnosing a rough idle in your 2025 Kia Telluride, it's crucial to consider several common issues that could be affecting your vehicle's performance. One of the primary culprits is a dirty or clogged air filter, which can significantly restrict airflow to the engine, resulting in an uneven idle. Additionally, faulty spark plugs are notorious for causing misfires; if they are worn out, they can lead to a rough running engine. Another potential issue is vacuum leaks, which can disrupt the delicate air-fuel mixture necessary for smooth operation. Problems within the fuel system, such as a clogged fuel filter or a malfunctioning fuel pump, can also impact engine performance and contribute to a rough idle. Furthermore, a faulty oxygen sensor can throw off the air-fuel ratio, exacerbating the problem. Lastly, don’t overlook the ignition system; issues with components like the ignition coil or distributor can lead to similar symptoms. By addressing these common problems, you can restore your Kia Telluride's performance and enjoy a smoother driving experience.

How urgent is it to address the rough idle in a 2025 Kia Telluride?

Addressing a rough idle in your 2025 Kia Telluride 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 engine misfires or problems with the fuel system, which, if left unattended, may escalate into more significant and costly repairs. Moreover, neglecting this symptom can lead to decreased fuel efficiency, resulting in higher operating costs over time. More critically, if the rough idle is linked to essential systems, it could pose safety risks while driving. Therefore, it is imperative to prioritize this issue and seek timely repairs to ensure your vehicle runs smoothly and safely, ultimately preserving its longevity and your peace of mind on the road.

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Diagnosing Rough Idle Issues in 2025 Kia Telluride