Ford 4.6L, 5.4L Index of Articles

Oxygen (O2) Sensor Wiring Diagrams (1997 4.6L F150-F250)

Oxygen (O2) Sensor Wiring Diagrams (1997 4.6L F150-F250)

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 (O2S11) Wiring Diagram RF Oxygen Sensor Troubleshooting...   read more >>

1997 Ford F150-F250 PCM Pin Out Chart (4.6L Late Production Only)

1997 Ford F150-F250 PCM Pin Out Chart (4.6L Late Production Only)

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 embossed with a few numbers. IMPORTANT: The illustration above and pin-out...   read more >>

How Can I Tell What's Wrong with my Transmission? (Ford 4.6L, 5.4L)

How Can I Tell What's Wrong with my Transmission? (Ford 4.6L, 5.4L)

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 Mode’... ...And so, you may be asking yourself: How can I tell if my...   read more >>

1997 Ford F150-F250 PCM Pin Out Chart (4.6L Early Production Only)

1997 Ford F150-F250 PCM Pin Out Chart (4.6L Early Production Only)

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 embossed with a few numbers. IMPORTANT: The illustration above and pin-out...   read more >>

Testing Diagnostic Trouble Codes: P0135, P0141, P0155, P0161

Testing Diagnostic Trouble Codes:  P0135, P0141, P0155, P0161

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 heater or it's circuit. This article is divided into several headings...   read more >>

How to Test the Blower Motor Switch (Ford 4.6L, 5.4L)

How to Test the Blower Motor Switch (Ford 4.6L, 5.4L)

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 its bad and needs to be replaced or not. This tutorial only applies to...   read more >>

How to Test the Oxygen Sensors (Ford 4.6L, 5.4L)

How to Test the Oxygen Sensors (Ford 4.6L, 5.4L)

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 sometimes the PCM (Powertrain Control Module = Fuel Injection Computer)...   read more >>

How to Test the Blower Motor Resistor (Ford 4.6L, 5.4L)

How to Test the Blower Motor Resistor (Ford 4.6L, 5.4L)

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 you how to bypass the blower resistor with a jumper wire and indirectly...   read more >>

Troubleshooting P0172 and P0175 (Ford 4.6L, 5.4L)

Troubleshooting P0172 and P0175 (Ford 4.6L, 5.4L)

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 these trouble codes mean and how to confirm that there really is something...   read more >>

How to Test the Blower Motor (Ford 4.6L, 5.4L)

How to Test the Blower Motor (Ford 4.6L, 5.4L)

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 it's bad (or not) isn't hard and this tutorial will help...   read more >>