FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
how to fix rough idle in Ford F-150 13th Generation (2015-2020) - Ford F-150
Home/Cars/Ford/F-150/13th Generation (2015-2020)/how to fix rough idle in Ford F-150 13th Generation (2015-2020)

how to fix rough idle in Ford F-150 13th Generation (2015-2020)

Ford F-150 13th Generation (2015-2020)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
551 words

Problem Statement

Learn how to diagnose and fix rough idle issues in Ford F-150 13th Generation (2015-2020). Step-by-step guide with symptoms, diagnostics, and solutions.

Affected Component
Engine
Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before working on electrical systems.
  • •Allow the engine to cool before handling components.

Symptoms

  • •Engine vibrations felt through the cabin
  • •Fluctuating RPMs at idle
  • •Check engine light illuminated
  • •Poor fuel economy
  • •Increased emissions
  • •Engine stalling at low speeds

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •OBD-II scanner
  • •Socket set
  • •Throttle body cleaner
  • •Soft cloth
  • •Fuel injector cleaning kit (optional)

Parts Required

  • •Spark plugs
  • •Ignition coils (if damaged)
  • •Vacuum hoses (if necessary)
  • •Fuel injector O-rings (if removed)

Additional Information

Affected Component
Engine
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
5 items
Parts Required
4 items

Related Faults

Loading...

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation
Solution
1. Preparation
  • Gather necessary tools and parts.
  • Park the vehicle on a level surface and ensure the engine is cool.
  • Disconnect the negative battery terminal to prevent electrical shorts.
2. Inspect and Replace Spark Plugs
  1. Remove the engine cover if applicable.
  2. Use a socket set to remove the ignition coil assembly.
  3. Carefully pull out the spark plug using a spark plug socket.
  4. Inspect the spark plug for wear and replace if necessary with the manufacturer-recommended type.
  5. Reinstall the spark plug and ignition coil, ensuring proper torque (typically around 11-15 lb-ft).
  6. Reattach any engine cover removed.
3. Clean Throttle Body and IAC Valve
  1. Remove the air intake duct to access the throttle body.
  2. Use throttle body cleaner and a soft cloth to clean the throttle plate and surrounding areas.
  3. Remove the IAC valve from its mounting position using a socket set.
  4. Clean the IAC valve with throttle body cleaner and ensure it operates freely.
  5. Reinstall the IAC valve and air intake duct.
4. Check and Repair Vacuum Leaks
  1. Inspect all vacuum hoses for cracks or disconnections.
  2. Replace any damaged hoses with OEM parts.
  3. Use a smoke test if needed to locate less visible leaks.
5. Inspect and Clean Fuel Injectors
  1. Remove the fuel injector connectors and fuel rail (if necessary).
  2. Use a fuel injector cleaning kit or professional service to clean injectors.
  3. Reinstall the fuel rail and reconnect electrical connectors.