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
THROTTLE BODY ADJUSTMENT -
Idle speed is controlled by the Powertrain Control Module
(PCM) through the fuel injector pulse width and the idle air control valve.
CAUTION -
Advancing the throttle return control screw may put airflow out of range so the PCM cannot control
idle speed and mixture. Backing off the throttle return control screw may cause the throttle plate to stick.