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

Desired Idle Speed

0-3187 RPM
The PCM commands the idle speed. The PCM compensates for various engine loads in order to maintain the desired idle speed. The actual engine RPMs speed should remain close to the desired idle under the various engine loads with the engine idling.