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

Warm engine to operating temperature. Remove oxygen sensor connector and connect digital voltmeter across connector terminals. Increase engine speed, while watching voltmeter. Voltage should increase from .2 to .9 volt with increase in RPM. If voltage does not increase as indicated, replace oxygen sensor.