1994 Sidekick RPM Question

[fixkick]

Update
New clutch cable is in and working fine.
New plastic parts have fixed shifter sloppiness.
New flex pipe in to replace leaking hose connector going in to TB.
I am happy with all of these things, but now have two problems.

Engine idles at 750-800 no matter what.  (hot or cold engine?)
Unplugging ISC does nothing, plugging the ISC air tube does nothing.  (hot engine , means ISC is dead, and bleed set wrong to compensate for dead IAC (previous owners)
Turning on heater and headlights drops to 700ish.  (ISC dead hot)

Also, the electrical system does not allow headlights to be on with radio and seems very weak. (wired wrong, btw Head lamps work key off, so wired WRONG)
Not sure where to go from here.

when the engine cold the IAC in the base of TB , is open and idle is 1200 RPM and lots higher if dead of winter and very very gold.
then as the engine warms the wax pellet in the IAC Pushes the valve in the iAC closed 100% at 150F and stays close then thermostat hold temps at 180F.
Then at 150 the ISC comes on line and regulates all hot idle speeds, for sure.

tell the full story, from cold to hot. only then can we point fingers at problems.





the IAC can stick open too. (or closed) but  we check that the input port is open cold, it must suck air cold or the IAC is dead.
The IAC below closes at 150F


on many cars this old the IAC is dead, stuck open so the owner closed the bleed screw (clock wise) to hide this failure.  Cold engine tests are first and this is what must work first.
one more nasty trick is PO, (previous owners) fiddled with the no touch screw see bottom left,,
with the throttle cables slack the TV (throttle valve butterfly plate ) is 99.9% closed, at about 0.0005" 1/2 a thousands of an inch. closed.
There reason not 100% closed is stop the TV from JAMMING in the bore. seen blocked open above with large screw.

the IAC above can fail 3 ways, stuck open , stuck closed or closing too late. The thermostat must work at 180f and the hose the runs the IAC must NOT BE CLOGGED."H2O"