2013 Ford F-150 Has Rough Idle

Troubleshooting Causes of Rough Idle in Your 2013 Ford F-150 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 2013 Ford F-150 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 Ford F-150 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 Ford F-150?

To effectively diagnose a rough idle in your 2013 Ford F-150, 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 error codes, as these can quickly point you to specific issues within the vehicle's computer system. Next, inspect the spark plugs for wear or fouling, as these are critical for proper engine performance. A clean air filter is essential for optimal airflow, so ensure it is free from dirt and debris. Don’t overlook the vacuum hoses; any cracks or disconnections can lead to significant idle problems, so inspect and repair them as needed. The mass airflow sensor is another key component; test it to ensure it’s functioning correctly, as a faulty sensor can disrupt the air-fuel mixture. Additionally, examine the fuel system, including the fuel filter and injectors, for clogs that could hinder performance. A clean throttle body is vital for maintaining idle quality, so consider cleaning it to remove any carbon buildup. Finally, verify the operation of the EGR valve, as a malfunctioning valve can also contribute to rough idling. By following this structured diagnostic approach, you can effectively identify and resolve the issues affecting your F-150's idle performance.

What are the common problems that could cause a rough idle in a 2013 Ford F-150?

When dealing with a rough idle in a 2013 Ford F-150, it's essential to consider several common problems that could be affecting your vehicle's performance. One of the primary culprits is a vacuum leak, which can disrupt the air-fuel mixture and lead to unstable engine operation. Additionally, issues with the exhaust gas recirculation (EGR) system, particularly a malfunctioning EGR valve, can also contribute to rough idling by allowing exhaust gases to enter the intake manifold improperly. Another significant factor to investigate is engine misfires, which occur when one or more cylinders fail to ignite fuel correctly, resulting in vibrations and an uneven idle. By systematically checking these areas, DIYers can effectively diagnose and address the rough idle issue, ensuring smoother operation of their Ford F-150.

How urgent is it to address the rough idle in a 2013 Ford F-150?

Addressing a rough idle in your 2013 Ford F-150 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 ultimately result in costly repairs. A rough idle often indicates underlying issues such as faulty spark plugs or clogged fuel injectors, which, if left unchecked, may escalate into more serious engine damage. Moreover, the longer you wait to address these symptoms, the more likely you are to face significant safety risks while driving. Regular maintenance and prompt attention to a rough idle can help ensure your truck runs smoothly and reliably, safeguarding both your investment and your safety on the road. Therefore, it is imperative to take action as soon as you notice any irregularities in your vehicle's performance.

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