2022 Cadillac XT5 Has Rough Idle

Troubleshooting Causes of Rough Idle in Your 2022 Cadillac XT5 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 2022 Cadillac XT5 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 Cadillac XT5 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 Cadillac XT5?

When faced with a rough idle in your 2022 Cadillac XT5, start by checking the spark plugs, as they play a crucial role in engine performance. Worn or damaged spark plugs can lead to misfires, resulting in an uneven idle. Next, inspect the air filter; a clogged filter can restrict airflow, negatively impacting engine efficiency. If these components are in good condition, turn your attention to the fuel system. Ensure that the fuel injectors, filter, and pump are functioning properly, as any issues here can contribute to a rough idle. Utilizing an OBD-II scanner is also beneficial; it can reveal error codes that point to specific problems within the engine. Additionally, examine the throttle body for cleanliness and functionality, as a dirty throttle body can disrupt the air-fuel mixture. Finally, check for vacuum leaks by inspecting hoses and connections, as these leaks can significantly affect engine performance. By systematically addressing these areas, you can effectively diagnose and potentially resolve the rough idle issue in your Cadillac XT5.

What are the common problems that could cause a rough idle in a 2022 Cadillac XT5?

When dealing with a rough idle in your 2022 Cadillac XT5, it's crucial to understand the common problems that may be at play. 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 performance issues. Additionally, inspect the spark plugs, as worn or faulty plugs can cause misfiring, which directly contributes to a rough idle. Another potential culprit is vacuum leaks, which can disrupt the air-fuel mixture and negatively impact engine performance. It's also wise to examine the fuel system for any issues, such as a clogged fuel filter or a malfunctioning fuel pump, as these can hinder proper fuel delivery. Furthermore, a faulty mass airflow sensor may provide incorrect readings of incoming air, affecting the air-fuel mixture and resulting in an unstable idle. Lastly, consider the condition of the Exhaust Gas Recirculation (EGR) valve; if it's not functioning correctly, it can disrupt the flow of exhaust gases, further impacting engine performance. By addressing these common issues, you can help restore your Cadillac XT5's smooth operation and enhance its overall performance.

How urgent is it to address the rough idle in a 2022 Cadillac XT5?

Addressing a rough idle in your 2022 Cadillac XT5 should be treated with a sense of urgency, as it can indicate underlying engine problems that may escalate if left unattended. A rough idle not only affects the smooth operation of your vehicle but can also lead to decreased fuel efficiency and drivability issues, which can compromise your overall driving experience. Moreover, neglecting this symptom could result in more severe engine damage over time, leading to costly repairs that could have been avoided with timely maintenance. By prioritizing the resolution of a rough idle, you not only enhance your vehicle's performance but also safeguard against potential safety risks and ensure the longevity of your Cadillac XT5. Taking action now can save you from more significant headaches down the road, making it a wise decision for any DIY enthusiast looking to maintain their vehicle's health.

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