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
- Connect an exhaust gas analyzer to test point. Warm engine to operating temperature. Disconnect oxygen sensor wire. Note CO% level.
- Disconnect and plug the vacuum hose from the fuel pressure regulator. The CO% level should increase. Reconnect the oxygen sensor wire. The CO level should decrease to 0.6-1.0%). If not, test the DME control.