Over 8500 GVW

Automatic Transmission (in drive) 650 RPM (+/- 25)

Engine should be at operating temperature 92°C to 104° (196°F to 222°F) and in "Closed Loop." Idle Air Control (IAC) valve counts should be 50 to 30. Add two counts for engines with less than 500 miles. Add two counts for every 1000 ft. above sea level.