2023 Volvo V90 Cross Country Has Rough Idle

Diagnosing the Causes of Rough Idle in Your 2023 Volvo V90 Cross Country and How to Resolve Them

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Reviewed by
Andrew Hajjar
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 2023 Volvo V90 Cross Country 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 2023 Volvo V90 Cross Country 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 2023 Volvo V90 Cross Country?

When faced with a rough idle in your 2023 Volvo V90 Cross Country, start your diagnostic process with the simplest checks to potentially resolve the issue quickly. Begin by inspecting the spark plugs, as worn or faulty plugs can significantly affect engine performance. Next, examine the air filter; a dirty or clogged filter can disrupt the air-fuel mixture, leading to rough idling. If these components are in good condition, turn your attention to the fuel system, checking the fuel injectors, filter, and pump for any malfunctions that could hinder fuel delivery. Utilizing an OBD-II scanner is also crucial, as it can reveal error codes that point to specific problems within the engine. Additionally, inspect the throttle body for cleanliness and functionality, as any obstruction can impact airflow. Finally, don’t overlook the possibility of vacuum leaks; check hoses and connections for any signs of wear or damage. 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 2023 Volvo V90 Cross Country?

When dealing with a rough idle in your 2023 Volvo V90 Cross Country, 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, disrupting the air-fuel mixture and leading to an unstable idle. Additionally, inspect the spark plugs, as worn or faulty plugs can cause misfiring, which directly contributes to rough idling and diminished engine efficiency. Another critical aspect to examine is the vacuum system for any leaks, as these can alter the air-fuel ratio and may even result in stalling. Fuel system issues, such as a clogged fuel filter or a malfunctioning fuel pump, can also impede fuel delivery, exacerbating idle problems. Furthermore, the mass airflow sensor (MAF) plays a vital role in maintaining the correct air-fuel mixture; if it malfunctions, it can lead to performance issues, including rough idling. Lastly, don't overlook the throttle body; if it is dirty or not functioning correctly, it can hinder airflow into the engine, causing similar symptoms. By addressing these common issues through regular maintenance and timely repairs, you can help ensure that your Volvo V90 Cross Country runs smoothly and efficiently.

How urgent is it to address the rough idle in my 2023 Volvo V90 Cross Country?

Addressing a rough idle in your 2023 Volvo V90 Cross Country is crucial for maintaining the vehicle's performance and longevity. A rough idle can be a symptom of various underlying issues, such as faulty spark plugs, fuel system malfunctions, or air intake problems. Ignoring these symptoms not only risks decreased fuel efficiency but can also lead to engine misfires and significant damage to engine components over time. For DIY enthusiasts, it’s essential to recognize that timely maintenance and repairs can prevent more serious and costly problems in the future. While some minor adjustments may be manageable at home, it’s advisable to consult a professional mechanic for a thorough diagnosis to ensure that any underlying issues are properly addressed. By taking prompt action, you can safeguard your vehicle's health and enhance its overall performance.

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