2022 Lincoln Navigator Has Rough Idle

Troubleshooting Causes of Rough Idle in Your 2022 Lincoln Navigator and How to Resolve Them

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Reviewed by
Bo Fader
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 2022 Lincoln Navigator 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 2022 Lincoln Navigator 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.

Brake caliper failure occurs in two different ways, and they create different symptoms.

The caliper can become stuck, in which case it won't release the brake pads. The seized caliper will cause the vehicle to brake constantly on one side, forcing the car to move toward that side. This pulling will be accompanied by a strong odor from one wheel.

Another way calipers fail is by leaking. If the caliper leaks, the brake pedal will feel too easy to push, and will sink all the way to the floor when held. Braking will become less effective the longer this goes on. There may also be brake fluid leaking onto the wheel.

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.

Brake rotors are mainly maintenance free, but when they have been subjected to abnormally hard use, the heat they absorb can cause the metal to turn blue, and cracking to occur. When this occurs, customers often specify they have lost braking power, or the vehicle's brakes are making noise. There may be no symptoms at all related to changing the brake rotors, since it is recommended to change brake rotors on most modern vehicles when performing a standard brake service.

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 2022 Lincoln Navigator?

When faced with a rough idle in your 2022 Lincoln Navigator, it's essential to adopt a systematic diagnostic approach to identify and resolve the issue effectively. Start by checking the spark plugs, as they play a crucial role in engine performance; ensure they are in good condition and properly gapped, since worn or fouled plugs can significantly impact idle quality. Next, inspect the air filter for cleanliness, as a clogged filter can restrict airflow and lead to rough idling. Following this, examine the fuel system, including the fuel filter and injectors, to rule out any clogs that might be hindering fuel delivery. Utilizing an OBD-II scanner to check for error codes can provide valuable insights into underlying problems, guiding your next steps. Additionally, inspect the vacuum hoses for any leaks or cracks, as these can disrupt the air-fuel mixture and contribute to idle issues. Finally, take a look at the throttle body; cleaning it of any carbon buildup or dirt can often improve idle performance. By methodically working through these steps, you can effectively diagnose and address the rough idle in your Navigator, ensuring a smoother driving experience.

What are the common problems that could cause a rough idle in a 2022 Lincoln Navigator?

When dealing with a rough idle in your 2022 Lincoln Navigator, it's essential to consider several common problems that could be affecting your vehicle's performance. One of the first areas to check is the air filter; a dirty or clogged air filter can significantly restrict airflow to the engine, leading to an uneven idle. Additionally, inspect the spark plugs, as worn or faulty plugs can cause misfiring, which is a frequent culprit behind rough idling. Another critical aspect to examine is the vacuum system for any leaks, as these can disrupt the air-fuel mixture and result in instability during idling. Fuel system issues, such as a clogged fuel filter or a malfunctioning fuel pump, can also impact engine performance, contributing to a rough idle. Furthermore, a faulty oxygen sensor may alter the air-fuel ratio, exacerbating the problem. Lastly, don’t overlook the ignition system; problems with components like the ignition coil can lead to similar symptoms. By addressing these common issues through regular maintenance and timely repairs, you can help ensure a smoother idle and overall better performance for your Lincoln Navigator.

How urgent is it to address the rough idle in a 2022 Lincoln Navigator?

Addressing a rough idle in your 2022 Lincoln Navigator is not just a matter of comfort; it is crucial for the overall health of your vehicle. A rough idle can signal serious underlying issues, such as problems with the engine, fuel system, or ignition components. If these symptoms are ignored, they can escalate into more significant problems, leading to costly repairs and decreased vehicle performance. Additionally, a rough idle often correlates with reduced fuel efficiency, which can impact your wallet over time. By taking prompt action to diagnose and resolve the issue, you not only enhance your driving experience but also safeguard your investment in the vehicle. Ignoring these warning signs can lead to further complications, making it imperative to address a rough idle as soon as it is detected.

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