my Ford F-150 12th Generation (2009-2014) has a check engine light and low power what to check

Diagnose and fix check engine light and power loss issues in Ford F-150 (2009-2014). Step-by-step guide with diagnostic steps and repair instructions.

Solution

1. Preparation

• Gather tools and materials for the repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to prevent electrical shorts during repairs.

2. Addressing Error Codes

• Connect the OBD-II scanner and retrieve stored trouble codes.
• Cross-reference the codes with a repair manual for specific issues (e.g., P0300 for misfire).

3. Inspect and Replace Components

a. Air Filter and Intake System

• Remove the air intake duct and inspect the air filter.
• If the filter is dirty or clogged, replace it with a new one.
• Reassemble the intake system ensuring all connections are secure.

b. Spark Plugs and Ignition Coils

• Remove the engine cover and disconnect ignition coil connectors.
• Unbolt and remove the ignition coils, then inspect each for damage.
• Remove and inspect spark plugs; replace if they are fouled or worn.
• Reinstall new spark plugs to manufacturer torque specifications (typically around 12-15 lb-ft).
• Reinstall ignition coils and reconnect the connectors.

c. Fuel Pressure Test

• Relieve fuel system pressure using the service port.
• Connect a fuel pressure gauge to the fuel rail.
• Start the engine and monitor pressure; replace the fuel pump if pressure is below specifications (usually around 30-45 PSI for F-150).

4. Exhaust System Inspection

• Inspect the exhaust manifold for cracks or leaks.
• Check the catalytic converter for signs of blockage or damage; replace if necessary.