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

Throttle Positions

Minimum Throttle - the least amount of throttle opening required for an upshift.

Light Throttle - approximately 1/4 of accelerator pedal travel.

Medium Throttle - approximately 1/2 of accelerator pedal travel.

Heavy Throttle - approximately 3/4 of accelerator pedal travel.

Wide Open Throttle (WOT) - full travel of the accelerator pedal.

Full Throttle Detent Downshift - a quick application of the accelerator pedal to its full travel, forcing a downshift.

Zero Throttle Coastdown - a full release of the accelerator pedal while the vehicle is in motion and in drive range.

Engine Braking - a procedure where the engine is used to slow the vehicle by manually downshifting during a zero throttle coastdown.