Ford 4.2L Index of Articles

You can test the alternator on your 4.2L V6 Ford F150 with just a multimeter. That's right, you can do it yourself and without any expenses diagnostic test equipment. The... [read more]

Diagnosing the left front oxygen sensor (HO2S 21) and/or diagnostic trouble code (DTC) P0151: HO2S 21 Circuit Malfunction is not as hard as you might think. You don't need... [read more]

The throttle position sensor (TPS) is probably one of the easiest sensors to test on your 4.2L equipped Ford pick up or van. In this tutorial I'll show you how to test it... [read more]

Troubleshooting diagnostic trouble code (DTC) P0135: HO2S 11 Circuit Malfunction is not as hard as you might think. The cool thing is that you don't need any expensive... [read more]

Testing engine compression is probably one of the most over-looked tests when diagnosing a hard to find misfire or no-start condition. In this tutorial I'll show you how... [read more]

You can test for the head gasket yourself since the tests are not hard to do. So, if your 4.2L Ford F150 (4.2L E150 or 4.2L E250) has suffered severe over-heating and you... [read more]

Testing the fuel injectors on the 4.2L Ford V6 engine can seem like one very impossible task. This is due to the fact that they're located under the intake manifold plenum... [read more]

Ford has made it easy to test the fuel pump on your 4.2L V6 equipped F150 (E150 and E250 van). This is due to the fact that Ford installed a Schrader valve on the fuel... [read more]