2017 Jaguar XE Has Rough Idle

Diagnosing the Causes of Rough Idling in Your 2017 Jaguar XE and How to Resolve Them

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Reviewed by
Aisha
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 2017 Jaguar XE 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 2017 Jaguar XE 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 2017 Jaguar XE?

To effectively diagnose a rough idle in your 2017 Jaguar XE, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by using an OBD-II scanner to check for any fault codes, as these can quickly point you to 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 also essential; ensure it’s not clogged, as restricted airflow can significantly impact idle quality. Following this, examine the vacuum hoses for leaks, which can disrupt the air-fuel mixture and lead to rough idling. Don’t overlook the fuel system; check the fuel filter and injectors for any malfunctions that could affect engine performance. Additionally, inspect the throttle body for carbon buildup, as cleaning it can often resolve idle issues. Finally, perform a compression test to verify that each cylinder is functioning correctly, as low compression can be a root cause of a rough idle. By following this structured diagnostic approach, you can identify and address the factors contributing to the rough idle in your vehicle.

What are the common problems that could cause a rough idle in a 2017 Jaguar XE?

When dealing with a rough idle in your 2017 Jaguar XE, it's essential to understand the common problems that could be at play. One frequent culprit is a dirty or faulty mass airflow sensor, which can disrupt the delicate balance of air and fuel entering the engine, leading to an uneven idle. Additionally, vacuum leaks can introduce unmetered air into the system, causing similar symptoms. Worn or faulty spark plugs are another common issue, as they can result in engine misfires that manifest as a rough idle. A clogged fuel filter may also be to blame, as it restricts fuel flow, impacting engine performance. Furthermore, problems with the idle air control valve can affect the engine's idle speed, while a malfunctioning throttle body can disrupt air intake, both contributing to an irregular idle. By identifying and addressing these issues through regular maintenance and timely repairs, you can restore smooth operation to your Jaguar XE and enhance its overall performance.

How urgent is it to address the rough idle in my 2017 Jaguar XE?

Addressing a rough idle in your 2017 Jaguar XE is not just a matter of comfort; it is crucial for the overall health and safety of your vehicle. A rough idle can indicate serious underlying problems, such as faulty spark plugs, fuel system malfunctions, or issues with the air intake. If left unaddressed, these symptoms can escalate, leading to decreased fuel efficiency, engine misfires, and even severe damage to engine components. The urgency of resolving a rough idle cannot be overstated, as neglecting it may result in costly repairs and compromised vehicle performance. Regular maintenance and prompt attention to these symptoms are essential to avoid more significant issues down the line. Therefore, it is highly advisable to consult a professional mechanic at the first sign of a rough idle to ensure your Jaguar XE remains in optimal condition and to safeguard your investment.

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