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)
Or, hide this message:
temporarily or
permanently
Air Fuel Ratio
Scan tool displays
0.0-25.5. Air Fuel Ratio indicates the
PCM commanded value. In Closed Loop, the air-to-fuel ratio should normally be approximately
14.2-14.7. A lower air-to-fuel ratio indicates a richer commanded mixture, which may by seen during Power Enrichment or Three-Way Catalytic Converter
(TWC) Protection modes. A higher air-to-fuel ratio indicates a leaner commanded mixture. This can be seen during Decel Fuel mode.