Ford 4.0L Index of Articles

This typical circuit diagram of the blower motor and blower resistor circuit applies to the 1998, 1999, 2000 4.0L Ford Ranger and Mazda B4000. More 4.0L Ford Tutorials You can find a complete list of tutorials here: Ford 4.0L Index of...   read more >>

In this article I'll shed some light on how to test and diagnose a Ford (and Mercury) V-6 Ignition Coil Pack. You’ll learn how to test it on the car and without using a Scan Tool. The tests are fast and easy and I'll take you thru' the whole...   read more >>

Here's a simplified ignition system wiring diagram of the 1992, 1993, 1994 4.0L Ford Explorer and 4.0L Ford Ranger. You'll find part two in the next page. The ignition system, on these particular vehicles, is a Waste Spark...   read more >>

Testing the Ford Mass Air Flow (MAF) Sensor on all of the Ford, Lincoln and Mercury cars and trucks is a very simple test that can be done without a Scan Tool. All you need is a Multimeter. I recommend using a Digital Multimeter but an Analog...   read more >>

The 1994 4.0L V6 Ford Explorer/Ranger is equipped with the E.E.C IV system and so its computer has 60 pins. Whether you're tracing down an electrical short or testing one of the input/output components of the PCM, pinout charts come in handy....   read more >>

Testing the EGR System on your Ford, Mercury, or Lincoln car or truck is a pretty easy affair. You don't need expensive testing equipment to do it and more importantly, with this article you'll be able to find out exactly what part (of the entire...   read more >>

This wiring diagram applies to the 1992, 1993, and 1994 4.0L V6 Ford Explorer and 4.0L V6 Ford Ranger. My intention, in creating this wiring diagram, was to have something easy to read.. and hopefully I...   read more >>

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 articles in site about bench testing a Ford Relay, you can find the other here: Bench Testing A Ford Relay -A...   read more >>

The throttle position sensor on your 1990-1995 4.0L Ford Explorer, Aerostar, or Ranger can be tested very easily and without an expensive diagnostic scan tool. All you need is a multimeter. In this tutorial, I'll show you how to test it in a...   read more >>