Ford 4.0L Index of Articles

In this tutorial I'm gonna' explain how to test the throttle position sensor (TPS) with a multimeter. This is a very easy test and what makes it so is that the TPS is... [read more]

One of the most common problems you're gonna' experience on your 4.0L equipped Ford is a misfire condition causing one or more of the following misfire codes: P0300, P0301,... [read more]

OBD II trouble code P0118 ECT Sensor Circuit High Voltage is set when the PCM in your Ford sees a fixed engine coolant temperature of -4 to -46°F (-20 to -43°C) that... [read more]

Troubleshooting the blower switch on your Ford Explorer's A/C Heater control panel isn't hard. All you need is a multimeter and to know what blower switch terminals should... [read more]

OBD II trouble code P0117 ECT Sensor Circuit Low Voltage is telling you that your 4.0L equipped Ford vehicle's fuel injection computer is seeing a continuous engine coolant... [read more]

If the blower motor only runs in HI or one of the blower speeds is not working, then there's a good chance that the blower motor resistor assembly is bad. Thankfully, the... [read more]

If the fuel pump fails, your Ford 4.0L V6 equipped SUV or mini-van is not gonna' start and run. Thankfully, Ford has made it super easy to test the fuel pump on your 4.0L... [read more]

Your Ford Explorer's (Aerostar, Ranger, B4000, Mountaineer, Mountaineer) blower motor is a simple 2-wire component that can be easily tested by manually applying battery... [read more]

Testing a cranks but does not start condition on your 4.0L Ford Explorer (Aerostar, Mercury Mountaineer) doesn't have to be complicated. In this tutorial, I'll go into the... [read more]

This article will help you to diagnose diagnostic trouble codes P0171 (System Too Lean Bank 1) and/or P0174 (System Too Lean Bank 2). One of the biggest misconceptions,... [read more]