Ford 4.0L Index of Articles

Testing the upstream Oxygen Sensors (O2S11 and O2S21), on your OBD II equipped 4.0L Ford Aerostar, Explorer, Ranger, or Mountaineer,... [read more] at:

This article will show you how to test the starter motor on your 4.0L Ford Explorer (or 4.0L Ranger, or 4.0L Aerostar, or 4.0L... [read more] at:

Troubleshooting and testing the throttle position sensor or diagnostic trouble codes: P0121, P0122, P0123 on your 4.0L V6 Ford Explorer (Ranger, or Mercury Mountaineer or... [read more]