2017 Jeep Patriot Has Rough Idle

Causes of Rough Idling in Your 2017 Jeep Patriot and How to Resolve the Issue for a Smoother Ride

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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 2017 Jeep Patriot 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 Jeep Patriot 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.

Customers with drum brake systems often specify they have lost braking power, or that the vehicle's brakes are making noise. This is because brake drums do not dissipate heat very well, so the heat from hard braking will cause stress fractures. These fractures make can make noise on the brake shoes as the drum revolves around the shoes. Lastly, the brake shoes may not be problematic, but may cause a grinding noise while stopping. This would indicate the shoes have no braking material left, and the brake shoes must be changed before the vehicle can be safely driven.

Learn more about brake shoe symptoms

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 Jeep Patriot?

To effectively diagnose a rough idle in your 2017 Jeep Patriot, start with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Begin by using an OBD-II scanner to check for any error codes, as these can provide immediate insights into potential issues. Next, inspect the spark plugs for wear or fouling, as these components are crucial for proper engine performance. A dirty air filter can also contribute to rough idling, so ensure it is clean and unobstructed. Following this, examine the vacuum hoses for any leaks, which can disrupt the air-fuel mixture. Cleaning the throttle body is another essential step, as carbon buildup can hinder airflow. Additionally, assess the fuel system, including the fuel injectors and filter, to rule out any clogs or malfunctions. Finally, check the PCV valve to ensure it is functioning correctly, as a faulty valve can also lead to idle issues. By following this diagnostic approach, you can efficiently identify and resolve the causes of rough idling in your vehicle.

What are the common causes of a rough idle in a 2017 Jeep Patriot?

When dealing with a rough idle in your 2017 Jeep Patriot, it's essential to consider several common problems that could 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 critical aspect to examine is the vacuum system for any leaks, as these can disrupt the air-fuel mixture necessary for smooth engine operation. Fuel system components, including the fuel filter and injectors, should also be assessed, as clogs or malfunctions here can hinder engine performance. Furthermore, a faulty oxygen sensor can throw off the air-fuel ratio, exacerbating idle issues. Lastly, don’t overlook the ignition system; problems with ignition coils or distributors can lead to rough idling as well. By systematically checking these components, you can effectively diagnose and address the rough idle in your Jeep Patriot, ensuring a smoother driving experience.

How urgent is it to address the rough idle in a 2017 Jeep Patriot?

Addressing a rough idle in your 2017 Jeep Patriot is not just a matter of comfort; it is crucial for the vehicle's overall health and performance. Ignoring this symptom can lead to a cascade of problems, including decreased fuel efficiency and engine misfires, which can escalate into more severe engine damage over time. A rough idle often indicates underlying issues such as faulty spark plugs, fuel system malfunctions, or air intake problems that, if left unresolved, could result in costly repairs. Moreover, the longer you wait to address these symptoms, the more likely you are to face safety risks while driving, as engine performance can significantly impact vehicle handling. Therefore, it is essential to prioritize this issue and seek a resolution promptly to maintain the longevity and reliability of your Jeep Patriot. Regular maintenance and timely interventions can save you from more extensive repairs and ensure a smoother driving experience.

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