2014 INFINITI QX60 Has Rough Idle

Troubleshooting Causes of Rough Idle in Your 2014 INFINITI QX60 and How to Resolve Them

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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 2014 INFINITI QX60 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 INFINITI QX60 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 2014 INFINITI QX60?

To effectively diagnose a rough idle in your 2014 INFINITI QX60, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by using an OBD-II scanner to identify any fault codes, as these can quickly point you toward specific issues within the vehicle's systems. Next, inspect the spark plugs for wear or damage, as faulty plugs can lead to misfires that contribute to a rough idle. Following this, examine the ignition system, including coils and wires, to ensure they are functioning properly. A thorough check of the air intake system is also essential; look for obstructions in the air filter and throttle body that could hinder airflow. Additionally, evaluate the fuel system components, such as the fuel filter and injectors, to confirm they are delivering fuel effectively. Don’t overlook the vacuum hoses, as any leaks can disrupt the air-fuel mixture, exacerbating idle issues. Finally, performing a compression test will help verify that each cylinder is producing adequate compression, as low compression can also lead to rough idling. By following this structured diagnostic approach, you can efficiently identify and address the root cause of the rough idle in your vehicle.

What are the common causes of a rough idle in a 2014 INFINITI QX60?

When dealing with a rough idle in your 2014 INFINITI QX60, it's crucial to understand the common problems that could be at play. One of the first things to check is the air filter; a dirty or clogged air filter can significantly restrict airflow to the engine, leading to performance issues. Additionally, inspect the spark plugs, as worn or faulty plugs can cause misfiring, which directly contributes to a rough idle. Another area to investigate is the vacuum system for any leaks, as these can disrupt the air-fuel mixture essential for smooth engine operation. Fuel system components, including the fuel filter and injectors, should also be examined, as clogs or malfunctions here can severely impact engine performance. Furthermore, the Mass Airflow Sensor (MAF) plays a critical role in maintaining the correct air-to-fuel ratio, and any faults in this sensor can lead to idling issues. Lastly, don't overlook the Exhaust Gas Recirculation (EGR) valve; if it's malfunctioning, it can disrupt the combustion process, resulting in a rough idle. By systematically checking these components, you can identify and address the root cause of the rough idle, ensuring your vehicle runs smoothly.

How urgent is it to address the rough idle in my 2014 INFINITI QX60?

Addressing a rough idle in your 2014 INFINITI QX60 is not just a matter of comfort; it is crucial for the overall health of your vehicle. A rough idle can indicate serious underlying problems, such as issues with the fuel system, ignition components, or even the engine itself. If left unchecked, these problems can escalate, leading to more severe damage and costly repairs. Additionally, a rough idle often results in decreased fuel efficiency and increased emissions, which not only affects your wallet but also the environment. By prioritizing the resolution of a rough idle, you can prevent further complications, maintain optimal performance, and extend the lifespan of your vehicle. Therefore, it is essential to take immediate action to diagnose and rectify the issue, ensuring your INFINITI continues to run smoothly and efficiently.

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2014 INFINITI QX60 Rough Idle: Causes & Repair Costs