2019 INFINITI Q60 Has Rough Idle

Troubleshooting Causes of Rough Idle in Your 2019 INFINITI Q60 and How to Restore Smooth Performance

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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 2019 INFINITI Q60 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 2019 INFINITI Q60 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 2019 INFINITI Q60?

To effectively diagnose a rough idle in your 2019 INFINITI Q60, 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 error codes, as these can quickly point you toward underlying issues. Next, inspect the spark plugs for wear or fouling, since these components are crucial for proper engine performance. A clean air filter is essential for optimal airflow, so ensure it is free from debris. Additionally, examine the vacuum hoses for any signs of damage or disconnection, as leaks can significantly disrupt the air-fuel mixture. Testing the mass airflow sensor is also vital, as a malfunction here can lead to incorrect air-fuel ratios. Don’t overlook the fuel system; check the injectors, filter, and pump for any irregularities that could affect idle quality. Finally, assess the throttle body for cleanliness and functionality, as any obstruction can hinder air intake. By following this structured diagnostic approach, you can efficiently identify and address the root causes of a rough idle in your vehicle.

What are the common causes of a rough idle in a 2019 INFINITI Q60?

When diagnosing a rough idle in your 2019 INFINITI Q60, it's crucial to consider several common problems that may 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, worn or faulty spark plugs can cause misfiring, resulting in an uneven idle. Another potential issue is vacuum leaks, which can disrupt the air-fuel mixture and cause instability in engine performance. Fuel system problems, such as a clogged fuel filter or a malfunctioning fuel pump, can also impact how smoothly your engine runs. Furthermore, a faulty mass airflow sensor may lead to incorrect air-fuel mixture readings, exacerbating the rough idle. Lastly, issues with the Exhaust Gas Recirculation (EGR) valve can interfere with the combustion process, contributing to the problem. By understanding these common causes, you can take the necessary steps to troubleshoot and resolve the rough idle in your vehicle effectively.

How urgent is it to address the rough idle in my 2019 INFINITI Q60?

Addressing a rough idle in your 2019 INFINITI Q60 should be treated with a sense of urgency, as neglecting this symptom can lead to more severe issues down the line. A rough idle often signals problems such as dirty fuel injectors, a clogged air filter, or malfunctioning sensors, which, if left unaddressed, can result in decreased fuel efficiency and engine misfires. These complications not only affect your vehicle's performance but can also lead to costly repairs if critical engine components are damaged. For DIY enthusiasts, it’s essential to regularly inspect and maintain your vehicle to catch these issues early. Simple tasks like cleaning the air filter or using a fuel injector cleaner can make a significant difference. However, if the problem persists, it’s wise to consult a qualified mechanic for a thorough diagnosis. Taking prompt action not only ensures the longevity of your vehicle but also enhances your driving experience by maintaining optimal performance.

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