October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Oxygen Sensor Heating Element (4.3L Turbo PFI)

Disconnect 3-wire connector at oxygen sensor. Measure resistance between White wire terminals on sensor side of connector. Resistance should be 3.5-14 ohms. If resistance is not 3.5-14 ohms, replace oxygen sensor.