E 250 Van V8-7.3L DSL (1988)
Note
The curb idle and fast idle speeds are controlled by the EEC-IV processor and the idle speed control device and can not be adjusted.
Remember
A change in idle speed occured because of a problem elsewhere. You should only enter this procedure after you have eliminated the possible causes
listed below:
^
Contamination within the throttle bore.
^
Contamination within the idle speed control device.
^
Throttle sticking or binding.
^
Engine not reaching operating temperature.