what does it mean if my Ford Explorer Fifth Generation (2011-2019) has a check engine light and runs...

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before beginning repairs.

2. Address Fault Codes

• Sub-step 1: Interpret the retrieved OBD-II trouble codes to guide your repair focus.
• Sub-step 2: Research specific codes (e.g., P0300 for random misfire) to understand the potential causes.

3. Replace Spark Plugs and Ignition Coils

• Sub-step 1: Remove the engine cover (if applicable) by unscrewing fasteners.
• Sub-step 2: Remove the ignition coil bolts and disconnect the electrical connectors.
• Sub-step 3: Pull out the ignition coils and remove the old spark plugs using a spark plug socket.
• Sub-step 4: Install new spark plugs at the manufacturer-specified torque (typically around 13-15 lb-ft).
• Sub-step 5: Reinstall the ignition coils and secure them with bolts.

4. Check and Repair Vacuum Leaks

• Sub-step 1: Inspect all vacuum hoses for cracks or disconnections.
• Sub-step 2: Replace any damaged hoses with OEM parts.
• Sub-step 3: Use a smoke machine or carb cleaner to detect leaks around the intake manifold.

5. Clean or Replace MAF Sensor

• Sub-step 1: Disconnect the MAF sensor electrical connector.
• Sub-step 2: Remove the MAF sensor from the air intake duct.
• Sub-step 3: Clean the sensor using MAF cleaner spray and a soft brush, or replace it if necessary.