Operation CHARM: Car repair manuals for everyone.
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

Controlled Idle Speed






* On Manual transmission vehicles the scan tool displays the RDL in neutral.

* Add 2 counts for the engines with less than 500 miles. Add 2 counts for every 1000 ft. above sea level.

** Let the engine idle until proper fuel control status (Open/Closed Loop) is reached.