Ford 4.6L, 5.4L Index of Articles

The 4.6L Ford F150 and F250 Pickup comes equipped with 4 heated oxygen sensors (HO2S). This article contains the wiring diagrams of all 4 oxygen sensors. RF Oxygen Sensor... [read more]

The EEC-V powertrain control module (PCM) has a 104 pin connector. To aid you in correctly identifying the connector pins, the back side of the connector (wire side) is... [read more]

The 4R70W automatic transmission in the Ford 4.6L or 5.4L usually fails in one of two ways: It'll either start slipping (when in Drive) or will go into ‘Limp In... [read more]

The EEC-V powertrain control module (PCM) has a 104 pin connector. To aid you in correctly identifying the connector pins, the back side of the connector (wire side) is... [read more]

This article will help you to diagnose diagnostic trouble codes: P0135, P0141, P0155, P0161. All of these trouble codes have to do with a malfunction in the oxygen sensor's... [read more]

The blower motor switch is a pretty easy component to test with a multimeter in Ohms mode (Ω). I'll show you how in a step-by-step way so that you can find out if... [read more]

Testing the oxygen sensor (commonly referred to as O2 sensors) on your Ford 4.6L, 5.4L car (pick up, SUV) is not that hard to do. Since oxygen sensor are not cheap and... [read more]

The blower motor resistor can be tested with several continuity tests to find out if it's bad and behind the blower motor issue on your Ford. This tutorial will also show... [read more]

This article will help you to diagnose diagnostic trouble codes P0172 (System too Rich Bank 1) and/or P0175 (System too Rich Bank 2). I'll go into the basics of what... [read more]

If you've been experiencing a ‘no blower’ problem on your Ford pickup (car or SUV), then you've come to the right place. Testing the blower motor to see if... [read more]