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

Minimum Air Rate

CONTROLLED IDLE SPEED

Transmission Gear Idle Speed IAC Counts [1] OPEN/CLOSED Loop [2]

Man. N 800 5-20 CL

Auto D 750 15-40 CL

[1] Add 2 counts for engines with less than 500 miles. Add 1 count for every 1000 ft. above sea level.

[2] Let engine idle until proper fuel control status is reached (OPEN/CLOSED loop).

MINIMUM IDLE AIR RATE

Transmission Gear Engine Speed OPEN/CLOSED Loop [1]

Man. N 600 +/- 50 CL

Auto. N 500 +/- 50 CL

[1] Let engine idle until proper fuel control status (OPEN/CLOSED loop) is reached.