2017 Ford Taurus Has Rough Idle

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

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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 2017 Ford Taurus has rough idle are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.
  • Spark Plugs: A worn or fouled spark plug can cause misfires, rough idling, and decreased fuel efficiency due to incomplete combustion.
  • 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 Ford Taurus 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 Ford Taurus?

To effectively diagnose a rough idle in your 2017 Ford Taurus, start with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Begin by connecting an OBD II scanner to your vehicle to retrieve any trouble codes, as these can provide immediate insights into potential issues. If the check engine light is illuminated, the codes can guide you toward the root cause. Next, inspect the spark plugs and ignition coils, as misfires due to faulty components are a common culprit of rough idling. If these parts appear worn or damaged, replacing them may resolve the issue. Following this, examine the vacuum hoses for any signs of leaks or damage, as vacuum leaks can disrupt the air-fuel mixture and lead to an unstable idle. Additionally, testing the throttle body is crucial, as a malfunctioning throttle position sensor can affect engine performance. Lastly, consider other common issues specific to the Ford Taurus, such as the Idle Air Control (IAC) valve, which can also contribute to rough idling. By methodically addressing these areas, you can effectively diagnose and potentially resolve the rough idle in your vehicle.

What are the common causes of a rough idle in a 2017 Ford Taurus?

When dealing with a rough idle in a 2017 Ford Taurus, it's essential to consider several common problems that could be at play. One of the primary culprits is a vacuum leak, which can disrupt the air-fuel mixture and lead to unstable engine performance. Additionally, worn or faulty spark plugs can cause misfiring, resulting in a rough idle as the engine struggles to maintain a consistent rhythm. Ignition system issues, including malfunctioning ignition coils, can also contribute to this problem, as they are crucial for delivering the spark needed for combustion. Furthermore, a malfunctioning PCV valve or EGR valve can affect engine efficiency, while dirty fuel injectors or a failing fuel pump may hinder proper fuel delivery. By systematically checking these components, DIYers can identify and address the root cause of the rough idle, restoring their Ford Taurus to smooth operation.

How urgent is it to address the rough idle in a 2017 Ford Taurus?

When dealing with a rough idle in your 2017 Ford Taurus, it's crucial to understand the potential consequences of neglecting this issue. A rough idle can signal various underlying problems, such as a vacuum leak, faulty spark plugs, or ignition coil malfunctions. If left unaddressed, these issues can escalate, leading to decreased fuel efficiency, engine misfires, and even significant damage to engine components. For DIY enthusiasts, this means that while you may not face an immediate emergency, taking the time to diagnose and repair the rough idle can save you from more costly repairs down the line. By promptly addressing the symptoms, you not only enhance your vehicle's performance but also ensure its longevity. Therefore, if you notice your Taurus idling roughly, consider investigating the root cause sooner rather than later to maintain the health of your vehicle and avoid further complications.

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2017 Ford Taurus Rough Idle: Causes & Repair Options