2022 Ford Mustang Mach-E Has Rough Idle

Diagnosing the Causes of Rough Idle in Your 2022 Ford Mustang Mach-E 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 2022 Ford Mustang Mach-E 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 2022 Ford Mustang Mach-E 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.

Brake caliper failure occurs in two different ways, and they create different symptoms.

The caliper can become stuck, in which case it won't release the brake pads. The seized caliper will cause the vehicle to brake constantly on one side, forcing the car to move toward that side. This pulling will be accompanied by a strong odor from one wheel.

Another way calipers fail is by leaking. If the caliper leaks, the brake pedal will feel too easy to push, and will sink all the way to the floor when held. Braking will become less effective the longer this goes on. There may also be brake fluid leaking onto the wheel.

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.

Brake rotors are mainly maintenance free, but when they have been subjected to abnormally hard use, the heat they absorb can cause the metal to turn blue, and cracking to occur. When this occurs, customers often specify they have lost braking power, or the vehicle's brakes are making noise. There may be no symptoms at all related to changing the brake rotors, since it is recommended to change brake rotors on most modern vehicles when performing a standard brake service.

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 2022 Ford Mustang Mach-E?

When faced with a rough idle in your 2022 Ford Mustang Mach-E, it's essential to adopt a methodical diagnostic approach to identify and resolve the issue. Start by checking for error codes using an OBD-II scanner, as these codes can reveal specific problems within the vehicle's systems. Next, inspect the spark plugs for wear or fouling, as these components are crucial for proper engine performance; replacing damaged spark plugs can significantly improve idle quality. Additionally, examine the air filter for dirt or clogs that may restrict airflow, and replace it if necessary to ensure optimal engine function. Don't overlook the vacuum hoses; any leaks or damage can disrupt the air-fuel mixture, leading to a rough idle, so repair or replace any faulty hoses you find. It's also wise to inspect the fuel system, including the fuel filter and injectors, as blockages or malfunctions here can adversely affect engine performance. Finally, take a look at the throttle body for carbon buildup or dirt, as cleaning it can enhance idle stability. By following these steps, you can effectively diagnose and address the rough idle issue in your Mustang Mach-E, ensuring a smoother driving experience.

What are the common problems that could cause a rough idle in a 2022 Ford Mustang Mach-E?

When dealing with a rough idle in your 2022 Ford Mustang Mach-E, it's crucial to identify the common problems that could be affecting your vehicle's performance. One of the first things to check is the air filter; a dirty or clogged air filter can significantly restrict airflow to the engine, leading to an uneven idle. Additionally, inspect the spark plugs, as worn or faulty plugs can cause misfiring, which is another common culprit of rough idling. It's also important to examine the vacuum system for any leaks, as these can disrupt the air-fuel mixture and result in instability during idle. Fuel system issues, such as a clogged fuel filter or a malfunctioning fuel pump, can further impact engine performance, so ensure these components are functioning correctly. Don't overlook the oxygen sensor, as a malfunction here can alter the air-fuel ratio, contributing to rough idling. Lastly, check the throttle body for carbon buildup or sensor malfunctions, as these can also lead to idling issues. By addressing these potential problems, you can help restore your Mustang Mach-E to optimal performance.

How urgent is it to address the rough idle issue in my 2022 Ford Mustang Mach-E?

Addressing the rough idle issue in your 2022 Ford Mustang Mach-E is crucial for maintaining the vehicle's performance and safety. A rough idle can signal underlying engine problems that, if ignored, may escalate into more severe issues, leading to costly repairs and decreased fuel efficiency. The urgency of resolving this issue cannot be overstated, as it not only affects drivability but can also compromise your overall driving experience. Moreover, neglecting a rough idle may result in diminished resale value and longevity of your vehicle. Therefore, it is advisable to diagnose and rectify any rough idle symptoms as soon as they arise to ensure your Mustang Mach-E operates smoothly and efficiently, safeguarding both your investment and your safety on the road.

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Diagnose Rough Idle Issues in 2022 Ford Mustang Mach-E