1990 tracker -no start FI fuse?

[fixkick]

the IAC factory ring can be moved but has Japanese locktite thread locker on it and will not want to budge. (some say)
I have never tired to move that factory ring.
see here (contributors photo)
https://fixkick.com/IDLE-AIR/Slide_Show/...ge_11.html

lower right corner see those threads.?
It is factory calibrated to close at 100% at 150F. (ending air supply here)
at 150 f the ISC take over the job (ECU brain does that) and idle is 800 + 1 50rpm. and regulate via ECU modulation of the ISC electric device.