what causes my Ford Explorer's engine to stall when idling

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Clean the Throttle Body

• Sub-steps:
  • Remove the air intake hose connected to the throttle body.
  • Use throttle body cleaner and a soft brush to clean the throttle plate and inside the throttle body.
  • Allow it to dry completely before reassembling.
• Tools Required: Throttle body cleaner, soft brush, socket set.

3. Replace the Idle Air Control (IAC) Valve

• Sub-steps:
  • Locate the IAC valve (usually found near the throttle body).
  • Disconnect the electrical connector and unscrew the mounting bolts.
  • Remove the old IAC valve and install the new one, ensuring proper alignment.
  • Reconnect the electrical connector and bolts securely.
• Tools Required: Socket set, screwdriver set.

4. Change Spark Plugs

• Sub-steps:
  • Remove the ignition coil(s) by unscrewing the bolts and disconnecting the electrical connector.
  • Use a spark plug socket to remove the old spark plugs.
  • Check the gap on the new spark plugs and install them, tightening to the manufacturer’s torque specifications.
  • Reinstall the ignition coil(s).
• Tools Required: Spark plug socket, torque wrench, socket set.

5. Reset the Engine Control Module (ECM)

• Sub-steps:
  • Reconnect the battery after all repairs are completed.
  • Use the OBD-II scanner to reset any error codes.
• Tools Required: OBD-II scanner.