Ford 4.0L Index of Articles

Testing the EGR system on your Ford, Mercury, or Lincoln car or truck is a pretty easy affair. You don't need expensive testing... [read more] at: easyautodiagnostics.com

You can easily and quickly troubleshoot the throttle position sensor or diagnostic trouble codes: P0121, P0122, P0123 on your 4.0L OHV V6 Ford Explorer (Aerostar, Mercury... [read more]

Testing the Ford Fuel Pump Relay on the car is not that hard to do. With the help of this ‘How To’ tutorial, I'll show you how to... [read more] at: easyautodiagnostics.com

Bench testing the Ford 4 or 5 pin relay is not hard to do at all, and in this article I'll show you how to do it (there are two... [read more] at: easyautodiagnostics.com

The EEC Power Relay not only supplies battery voltage to the fuel injection computer (also known as the E.E.C. Electronic Control... [read more] at: easyautodiagnostics.com

Every now and then, the need arises to bench test a Relay to find out if it's really bad or not. This article will help you to... [read more] at: easyautodiagnostics.com