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my Ford Explorer has a check engine light and it's running rough - Ford Explorer
Home/Cars/Ford/Explorer/Sixth Generation (2020-present)/my Ford Explorer has a check engine light and it's running rough

my Ford Explorer has a check engine light and it's running rough

Ford Explorer Sixth Generation (2020-present)

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

Problem Statement

Learn how to diagnose and fix engine performance issues in Ford Explorer with check engine light. Step-by-step guide with diagnostic procedures and repair instructions.

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 opening any components related to the cooling system.

Symptoms

  • •Check engine light illuminated
  • •Rough idle
  • •Engine stalling intermittently
  • •Reduced acceleration
  • •Poor fuel economy
  • •Increased exhaust emissions

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
  • •Spark plug socket
  • •Fuel pressure gauge
  • •MAF cleaner spray

Parts Required

  • •Spark plugs
  • •Ignition coils (if necessary)
  • •Air filter
  • •Fuel filter (if necessary)

Additional Information

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

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Solution
1. Preparation
  • Gather tools and parts required for the repair.
  • Park the vehicle on a level surface and engage the parking brake.
  • Disconnect the battery to ensure safety during repairs.
2. Inspect and Replace Spark Plugs
  • Remove the ignition coil covers using a socket set.
  • Disconnect the wiring harness from each ignition coil.
  • Remove the ignition coils and spark plugs using a spark plug socket.
  • Inspect the old spark plugs for wear; replace with new spark plugs if necessary.
  • Torque the new spark plugs to the manufacturer's specification (usually around 13-15 lb-ft).
  • Reinstall the ignition coils and reconnect the wiring harness.
3. Fuel System Inspection
  • Connect the fuel pressure gauge to the fuel rail.
  • Turn the ignition to the "ON" position (do not start the engine) to check the fuel pressure.
  • Compare the reading to the manufacturer’s specifications (typically around 30-50 psi).
  • If the fuel pressure is low, check the fuel filter for clogs and replace if necessary.
  • If the pressure is normal, proceed to inspect the fuel injectors for proper operation.
4. Air Intake System Inspection
  • Remove the air intake duct to access the air filter and MAF sensor.
  • Inspect and replace the air filter if it is dirty or clogged.
  • Carefully clean the MAF sensor with MAF cleaner spray (do not touch the sensor element).
  • Reinstall the air intake duct securely.
5. Vacuum System Check
  • Visually inspect all vacuum hoses for cracks, frays, or disconnections.
  • Replace any damaged hoses with new ones.
  • Clear any trouble codes from the OBD-II system after completing repairs.