Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
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temporarily or
permanently
Oxygen Sensor: Testing and Inspection
1.
Be sure engine is running at normal operating temperature.
2.
Disconnect
oxygen sensor plug.
Oxygen Sensor Connector:
3.
Connect voltmeter to terminal 1, sensor half of plug, and ground.
4.
Voltage must be between 0.1 VDC to 1.0 VDC, depending on oxygen concentration in exhaust.
5.
Disconnect vacuum line from fuel pressure regulator. Voltage reading should increase.
