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

Acceleration Mode

This is a closed loop mode.

The PCM recognizes an abrupt increase in throttle position and an increase or MAP pressure as a demand for increased engine output and vehicle acceleration.

In response the PCM increases the injector pulse width to meet the increased fuel demand.