2018 Nissan Rogue Has Rough Idle

Troubleshooting Causes of Rough Idle in Your 2018 Nissan Rogue and How to Resolve Them

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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 2018 Nissan Rogue 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 2018 Nissan Rogue 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 steps to diagnose a rough idle in a 2018 Nissan Rogue?

To effectively diagnose a rough idle in your 2018 Nissan Rogue, start with the simplest solutions before moving on to more complex diagnostics. Begin by using an OBD-II scanner to check for any error codes, as these can pinpoint specific issues within the engine. Next, inspect the air filter; a clogged filter can significantly restrict airflow, leading to performance problems. After that, examine the spark plugs for wear or fouling, as these components are crucial for proper ignition and can cause misfires. Following this, assess the fuel system, looking for clogs in the fuel filter or issues with the injectors that could disrupt fuel delivery. Don’t forget to check the PCV valve, as a malfunction here can also impact idle quality. Additionally, inspect the throttle body for dirt or malfunctions that could affect the air-fuel mixture. Finally, look for any vacuum leaks, as these can create an imbalance in the engine's air-fuel ratio. By systematically addressing these areas, you can effectively identify and resolve the cause of a rough idle in your vehicle.

What are the common causes of a rough idle in a 2018 Nissan Rogue?

When dealing with a rough idle in your 2018 Nissan Rogue, 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 problem. 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 regularly maintaining these components and addressing any issues promptly, you can help ensure a smoother idle and overall better performance for your Nissan Rogue.

How urgent is it to address the rough idle in my 2018 Nissan Rogue?

Addressing a rough idle in your 2018 Nissan Rogue is not just a matter of comfort; it is crucial for the overall health and safety of your vehicle. A rough idle can indicate serious underlying problems such as faulty spark plugs, fuel system malfunctions, or engine misfires, which, if left unattended, can escalate into more significant issues. Ignoring these symptoms can lead to decreased fuel efficiency, increased emissions, and even engine damage, which could result in costly repairs. Moreover, a rough idle can compromise your vehicle's performance and safety, making it harder to control while driving. Therefore, it is essential to prioritize this issue and conduct regular maintenance checks. By addressing the rough idle promptly, you not only enhance your vehicle's longevity but also ensure a safer driving experience.

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