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why does my Ford Explorer's engine light come on and off? - Ford Explorer
Home/Cars/Ford/Explorer/Sixth Generation (2020-present)/why does my Ford Explorer's engine light come on and off?

why does my Ford Explorer's engine light come on and off?

Ford Explorer Sixth Generation (2020-present)

Error Codes
1-3 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
518 words

Problem Statement

Learn how to diagnose and fix the intermittent engine light issue in Ford Explorer. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component
Engine
Estimated Time
1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before working on electrical components to avoid shorts.

Symptoms

  • •Check engine light illuminated intermittently
  • •Engine may run rough or stall
  • •Decreased fuel efficiency
  • •Unusual engine noises (e.g., knocking or pinging)
  • •Increased emissions during operation

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
  • •Multimeter
  • •Basic hand tools

Parts Required

  • •Spark plugs (if needed)
  • •Ignition coils (if needed)
  • •Air filter (if needed)
  • •Gas cap (if faulty)

Additional Information

Affected Component
Engine
Estimated Time
1-3 hours
Difficulty
medium
Severity
medium
Tools Required
4 items
Parts Required
4 items

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Solution
1. Preparation
  • Gather tools: OBD-II scanner, socket set, multimeter, basic hand tools.
  • Ensure the vehicle is parked on a level surface with the engine off and cool.
2. Clear Error Codes
  • Connect the OBD-II scanner to the vehicle’s diagnostic port.
  • Follow the scanner's instructions to clear any stored error codes.
  • Disconnect the scanner and start the engine to see if the light returns.
3. Inspect and Replace Components

A. Gas Cap

  • Verify the gas cap is in good condition; replace if cracked or damaged.
  • Ensure it is tightened properly, as loose caps can trigger engine light.

B. Spark Plugs and Coils

  • Remove spark plug wires and use a socket set to remove spark plugs.
  • Inspect plugs for wear; replace any that are worn or fouled.
  • Check ignition coils for proper operation; replace any faulty coils.

C. Air Intake System

  • Remove the air intake duct to inspect for blockages or leaks.
  • Clean the air filter or replace it if it is dirty.
  • Reinstall all components securely.
4. Electrical Testing
  • Use a multimeter to check battery voltage; it should be around 12.6 volts with the engine off.
  • Start the engine and check the alternator output; it should read between 13.7 to 14.7 volts.
  • If readings are out of range, consider replacing the battery or alternator.