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why does my Ford Explorer have a check engine light and runs rough - Ford Explorer
Home/Cars/Ford/Explorer/Sixth Generation (2020-present)/why does my Ford Explorer have a check engine light and runs rough

why does my Ford Explorer have a check engine light and runs rough

Ford Explorer Sixth Generation (2020-present)

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

Problem Statement

Learn how to diagnose and fix the check engine light and rough idle issues in Ford Explorer. 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.
  • •Relieve fuel system pressure before servicing the fuel system.

Symptoms

  • •Check engine light illuminated
  • •Rough idle
  • •Engine stalling during low RPM
  • •Decreased acceleration power
  • •Poor fuel economy
  • •Increased 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
  • •Fuel pressure gauge
  • •Throttle body cleaner
  • •Torque wrench

Parts Required

  • •Spark plugs (if worn)
  • •Ignition coils (if faulty)
  • •Fuel injectors (if needed)
  • •Air filter (if dirty)
  • •Vacuum lines (if damaged)

Additional Information

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

Related Faults

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Solution
1. Preparation
  • Gather necessary tools and parts.
  • Disconnect the battery to prevent electrical shock.
  • Ensure the vehicle is on a flat surface.
2. Scan for Codes
  • Use an OBD-II scanner to retrieve error codes.
    • Connect the scanner to the OBD-II port under the dashboard.
    • Turn the ignition to the "On" position without starting the engine.
    • Note down all trouble codes for further analysis.
3. Inspect Spark Plugs and Ignition Coils
  • Remove the engine cover if necessary.
  • Disconnect the ignition coil connectors.
  • Using a socket set, remove the ignition coils.
  • Inspect spark plugs for wear or damage; replace if necessary.
  • Reinstall the ignition coils and reconnect the connectors.
4. Examine Fuel System
  • Use a fuel pressure gauge to check for proper fuel pressure according to manufacturer specifications.
  • Inspect fuel injectors for clogs or leaks.
  • If injectors are faulty, replace them using the following sub-steps:
    • Relieve fuel system pressure.
    • Disconnect the fuel lines and electrical connectors.
    • Remove the old injectors and install new ones, ensuring proper seating.
5. Inspect Air Intake System
  • Check the air filter for cleanliness; replace if dirty.
  • Inspect the intake hoses for cracks or loose connections.
  • Clean the throttle body using throttle body cleaner and a soft cloth.
6. Check Vacuum Lines
  • Visually inspect all vacuum lines for any signs of wear or disconnection.
  • Replace any damaged lines and ensure all connections are secure.