FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
why does my Ford F-150 13th Generation (2015-2020) have a rough idle - Ford F-150
Home/Cars/Ford/F-150/13th Generation (2015-2020)/why does my Ford F-150 13th Generation (2015-2020) have a rough idle

why does my Ford F-150 13th Generation (2015-2020) have a rough idle

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

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
549 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 repair instructions.

Affected Component
Engine
Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect battery before working on electrical systems.
  • •Allow engine to cool before opening any components.

Symptoms

  • •Check engine light illuminated
  • •Engine vibrations noticeable at idle
  • •Increased fuel consumption
  • •Engine stalling or hesitation
  • •Poor acceleration response
  • •Unusual engine noises (e.g., knocking or pinging)

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7

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
  • •Screwdrivers
  • •Fuel pressure gauge
  • •Multimeter
  • •Smoke machine (optional)

Parts Required

  • •Air filter
  • •Spark plugs
  • •Ignition coils (if needed)
  • •Vacuum hoses (if needed)

Additional Information

Affected Component
Engine
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
6 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 tools and parts.
  • Disconnect the battery negative terminal to ensure safety.
  • Allow the engine to cool down before starting work.
2. Inspect and Replace Air Filter
  • Remove the air filter housing cover using a screwdriver or socket set.
  • Take out the old air filter and inspect for dirt or damage.
  • Install a new air filter, ensuring it fits snugly into the housing.
  • Reattach the air filter housing cover and secure it.
3. Check for Vacuum Leaks
  • Visually inspect all vacuum hoses for cracks or disconnections.
  • Use a smoke machine or carburetor cleaner to detect leaks; spray around suspected areas and watch for RPM changes.
  • Replace any damaged hoses or seals as needed.
4. Inspect and Replace Spark Plugs
  • Remove the ignition coil cover if applicable, using a socket set.
  • Disconnect the ignition coils and remove them.
  • Remove the spark plugs using a spark plug socket.
  • Inspect the plugs for signs of wear or deposits; replace with OEM or equivalent spark plugs at the specified gap.
  • Reinstall the ignition coils and cover.
5. Fuel Pressure Check
  • Locate the fuel pressure test port on the fuel rail.
  • Connect a fuel pressure gauge and turn the ignition to the "ON" position (do not start the engine).
  • Check the pressure reading against manufacturer specifications; replace the fuel pump if it is below recommended levels.
6. Check Ignition Coils
  • Using a multimeter, test the resistance of each ignition coil.
  • Replace any coils that do not meet the specified resistance values.