2013 Buick Encore Has Rough Idle

Common Causes of Rough Idling in Your 2013 Buick Encore 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 2013 Buick Encore 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 2013 Buick Encore 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 2013 Buick Encore?

To effectively diagnose a rough idle in your 2013 Buick Encore, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by connecting an OBD II scanner to identify any trouble codes, particularly if the check engine light is illuminated, as these codes can pinpoint specific issues. Next, perform a visual inspection of the air intake system and spark plugs, looking for signs of wear or leaks that could disrupt airflow. Pay special attention to engine code 0171, which often indicates a vacuum leak leading to excess air in the system, a common culprit for rough idling. Additionally, evaluate the condition of air, fuel, and spark components, as any deficiencies in these areas can significantly affect engine performance. Finally, consider other symptoms such as oil leaks or unusual noises, as these can provide further clues to the underlying problem. By following this structured diagnostic approach, you can efficiently identify and address the causes of a rough idle in your vehicle.

What are the common causes of a rough idle in a 2013 Buick Encore?

When dealing with a rough idle in your 2013 Buick Encore, it's essential to understand the common problems that could be causing this issue. One of the primary culprits is vacuum leaks, which can significantly disrupt the air-to-fuel ratio, leading to an unstable idle. Additionally, worn or faulty spark plugs can hinder the ignition process, resulting in poor engine performance and rough idling. Another potential issue is the ignition coil; if it's malfunctioning, it may cause engine hesitation and misfires, further contributing to the rough idle experience. Excess air in the system, particularly in the 1.4 gas engine variant, can also lead to similar symptoms, as can a faulty throttle body, which may reduce engine output. By identifying and addressing these common problems, you can restore your vehicle's smooth operation and enhance its overall performance.

How urgent is it to address the rough idle in a 2013 Buick Encore?

Addressing a rough idle in your 2013 Buick Encore should be treated with urgency, as it can signal various underlying problems that may compromise your vehicle's performance and safety. Symptoms such as a rough idle can stem from issues like excess air in the system, a malfunctioning throttle body, or failing ignition coils and fuel injectors. Ignoring these signs can lead to diminished engine power, increased risk of stalling, and overall poor vehicle performance, which could pose safety risks on the road. Moreover, delaying repairs can result in more severe damage, leading to costly repairs that could have been avoided with timely intervention. Regular maintenance and prompt attention to any irregularities not only enhance your vehicle's reliability but also extend its lifespan, making it crucial to address a rough idle as soon as it arises.

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2013 Buick Encore Rough Idle: Causes & Repair Guide