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, can be accomplished in a few easy steps... [read more]
Checking whether your 4.0L Ford Explorer (Aerostar, Mountaineer) has a blown head gasket can be done with one of four different tests and in this article I'll show you how... [read more]
You can easily test the alternator with a multimeter to find out if it's bad or not. Not to mention that you don't need any expensive testing equipment to do it! In this... [read more]
If you've been wondering if it's possible to test the thermostat (without replacing it on a hunch), the answer is YES! The thermostat can be tested while it's still on the... [read more]
One of the most common problems, with MAF Sensor equipped Ford (Mercury and Lincoln) vehicles, is that the MAF Sensor’s Hot Wires will get dirty (contaminated). This... [read more]
A compression test will let you know if the hard-to-diagnose misfire (or rough idle) condition or no-start condition is due to something wrong inside the engine (like worn... [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... [read more] at: easyautodiagnostics.com
Testing the fuel injectors on the 1991-1996 4.0L Ford Explorer and Aerostar can be quite a challenge. Why? Because three of them are under the intake manifold plenum. Also,... [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... [read more] at: easyautodiagnostics.com
This tutorial will show you how to test the starter motor on your 4.0L Ford Explorer (Aerostar or Mercury Mountaineer) to see if it's the one responsible for your engine's... [read more]
