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. Connect voltmeter to appropriate check connector terminal (positive lead to Ox and negative to E).
- Operate engine at 2500 RPM for 90 seconds. Voltmeter needle should fluctuate 8 times or more in 10 seconds between 0 and 7 volts. If it does, sensor is okay. If not recheck system for too rich or too lean (vacuum leak) condition or replace oxygen sensor.