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
Idle Speed: Adjustments
The Powertrain Control Module
(PCM) controls the Idle Air Control
(IAC) valve in order to regulate the air flow through the idle air bypass passage. The amount of air flowing through the idle air bypass passage determines the
idle speed. The PCM directs the IAC valve according to changes in engine load. A stalling or poor idle concern could be caused by the IAC valve not operating properly.