2013 Chevrolet Malibu Has Rough Idle

Common Causes of Rough Idling in Your 2013 Chevrolet Malibu 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 2013 Chevrolet Malibu 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 Chevrolet Malibu 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 initial diagnostic steps to take for a rough idle in a 2013 Chevrolet Malibu?

When faced with a rough idle in your 2013 Chevrolet Malibu, it's essential to adopt a methodical diagnostic approach to identify the root cause. Start by checking for fault codes using an OBD-II scanner, as these codes can reveal specific issues within the engine's systems. Next, inspect the spark plugs for wear or fouling, as these components play a crucial role in engine performance. A clean air filter is also vital; ensure it is free from dirt and debris to maintain proper airflow. Additionally, examine the vacuum hoses for leaks, which can disrupt the air-fuel mixture and lead to idling problems. Don't overlook the fuel system; check the fuel filter and injectors to ensure they are functioning correctly. Finally, consider cleaning the throttle body, as a buildup of grime can hinder airflow and affect idle quality. By following these steps, you can effectively diagnose and address the rough idle issue, potentially saving time and money on repairs.

What are the common causes of a rough idle in a 2013 Chevrolet Malibu?

When dealing with a rough idle in your 2013 Chevrolet Malibu, 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 component to examine is the vacuum system for any leaks, as these can disrupt the air-fuel mixture necessary for smooth engine operation. Fuel system issues, such as a clogged fuel filter or malfunctioning fuel injectors, can also impact engine performance and should not be overlooked. Furthermore, the mass airflow sensor plays a vital role in regulating the air-fuel mixture, and if it's faulty, it can lead to rough idling. Lastly, consider the condition of the Exhaust Gas Recirculation (EGR) valve, as a malfunctioning EGR valve can disrupt the combustion process, resulting in an uneven idle. By systematically checking these components, you can effectively diagnose and address the rough idle issue in your Malibu, ensuring a smoother driving experience.

How urgent is it to address the rough idle in my 2013 Chevrolet Malibu?

Addressing a rough idle in your 2013 Chevrolet Malibu should not be taken lightly, as it can indicate serious underlying issues that may compromise your vehicle's performance and safety. A rough idle often points to problems within the fuel, ignition, or emissions systems, which, if left unresolved, can lead to decreased fuel efficiency and even engine stalling while driving. Ignoring these symptoms can escalate into more significant damage, resulting in costly repairs that could have been avoided with timely intervention. While it may not seem like an immediate emergency, the potential for serious complications makes it crucial to diagnose and address the rough idle as soon as possible. By doing so, you not only enhance the reliability of your vehicle but also ensure a safer driving experience. Therefore, if you notice your Malibu idling roughly, consider taking action promptly to prevent further issues down the line.

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