October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Idle Speed
On 4.2L engine, idle speed is controlled by MCU through the stepper motor, sole-vac throttle positioner, and idle relay. See Figure
-Figure
.
Idle speed on 5.9L is controlled by mechanical adjustments. See ADJUSTMENTS
article.
NOTE:
For basic ignition checks, see BASIC TESTING
article.