Warmed up, idling too fast

[fixkick]

when you flush an old engine like this, we flash all hoses, each is tested for proper flows.
but in most case they are so old and atrophied, they cant be done. the turn hard and brittle.
there is bypass hose to, that needs to work
see below
#14 bypass.
and the IAC.
see that water manifold behind mr pump, see O-ring there, see the end nipple, see that it goes to IAC? that hose must flow water, or the ENGINE WILL RACE HOT, super bad racing...
racing means , insane high idle speeds, as even 3000 RPM is possible.
if the hose flows a working IAC closes 100% at 150f. by design.