2022 Buick Envision Has Rough Idle

Troubleshooting Causes of Rough Idle in Your 2022 Buick Envision 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 Buick Envision 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 Buick Envision 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 Buick Envision?

When faced with a rough idle in your 2022 Buick Envision, it's essential to adopt a methodical diagnostic approach to identify and resolve the issue effectively. Start by checking the spark plugs, as worn or damaged plugs can lead to engine misfires, significantly affecting idle quality. Next, inspect the air filter; a clogged filter can restrict airflow, causing performance issues. Following this, examine the fuel system components, including the fuel injectors and filter, to ensure proper fuel delivery. Utilizing an OBD-II scanner to check for error codes can provide critical insights into any underlying problems. Additionally, look for vacuum leaks in hoses and connections, as these can disrupt the air-fuel mixture. Finally, assess the throttle body for cleanliness and functionality, as a dirty throttle body can hinder airflow and contribute to a rough idle. By systematically addressing these areas, you can effectively diagnose and potentially resolve the rough idle issue in your vehicle.

What are the common problems that could cause a rough idle in a 2022 Buick Envision?

When dealing with a rough idle in a 2022 Buick Envision, it's essential to consider several common problems 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, leading to an uneven idle. Additionally, faulty spark plugs are notorious for causing misfires; if they are worn out, they can disrupt the combustion process and result in a rough idle. Another potential issue is vacuum leaks, which can disturb the air-fuel mixture necessary for smooth engine operation. Problems within the fuel system, such as a clogged fuel filter or a malfunctioning fuel pump, can also hinder fuel delivery, contributing to idle irregularities. Furthermore, a malfunctioning oxygen sensor may cause the engine to run either too rich or too lean, further complicating idle quality. Lastly, issues with the throttle body, including carbon buildup or sensor malfunctions, can interfere with the air intake process, exacerbating the rough idle. By identifying and addressing these common problems, you can effectively troubleshoot and resolve the rough idle issue in your Buick Envision.

How urgent is it to address the rough idle in a 2022 Buick Envision?

Addressing a rough idle in your 2022 Buick Envision is not just a matter of comfort; it is crucial for the vehicle's overall health and performance. A rough idle can indicate underlying issues with the engine, such as problems with the fuel or ignition systems, which, if left unchecked, may lead to more severe complications. Ignoring this symptom can result in decreased fuel efficiency and diminished performance, ultimately risking significant engine damage that could require costly repairs. Moreover, a rough idle may also pose safety risks, as it can affect the vehicle's handling and responsiveness. Therefore, it is essential to prioritize this issue and seek timely maintenance to ensure your Buick Envision operates smoothly and efficiently, safeguarding both your investment and your safety on the road.

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2022 Buick Envision Rough Idle: Causes & Repairs | RepairPal