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
IAC Position
Display shows counts from 0 to 255. This display indicates the commanded position of the Idle Air Control
(IAC) valve pintle. When a higher idle engine speed is desired the control module will retract the IAC pintle, increasing airflow and increasing the count value. When a slower idle engine speed is desired the control module will extend the IAC pintle, decreasing airflow and decreasing the count value. 0 counts would indicate a fully closed IAC pintle