High idle, probably broken IAC, questions

[fixkick]

I finally got my brake calibers with all assembly parts and went to start the engine first time since autumn. (Yup runs fine, no problem there).

Also got all the gaskets and ISC for the TB and was looking for the idle air screw.

Now I think I have made a mistake identifying the TB/injector and it seems that 91 Vitara with SWE country code actually has the same TB thingy as 89/90 Sidekick.


Can you confirm this from my picture.



And if that is the case can I fix hot idle by adjusting the never touch screw or should I still block IAC and use a T shaped connector and run a vacuum hose to cabin and put a moped's fuel valve there as manual choke?


Anyhow I will now replace all the gaskets and few hoses that I could not last time replace.

In USA parlance (sold new there) that is 89/90 TB for sure. see hard wires to ISC is 89. gen1 engine.
that blue tag on wire wall screams NONE USA>!!! but can be seen in CANADA before they banned imports of none canada market only cars there. over 50 market there are....
use is e03 and e33, fed and calif. USA>

and that same tag if show here I tell you what country code is it.  for sure,

the only very serious problem mixing ECU and wrong TB is 89/90 isc  uses 2 times the normal ISC current  than 91+ USA.
this can damage the ECU, (but not backwards.) serious as in SMOKED transistor ISC in ECU.

ahhhj forgot me, SWE is Sweden country. code E17 is SWE. for sure.
i have the list here.

https://fixkick.com/specs/the-market-list1.html

try to know engines in all 50 countries have changes made and different times.
use 8valve banned in 1996 (july1last one 1995 mfg)
in other countries up to 2004 made.  long runs of 8v.

different ECu

and different distributors, suzuki parts list show them as type, 1,2,3, or more engines. just 8v. vast variances exits.


yes on the 89/90 there is no air bleed screw, I see it missing there.
so only the TV stop screw is idle speed duty cycle calibration on this TB.

if engine is hot 180f.+
and idle not 800rpm (and fast idle pins on ECU are false (logically)
then unscrew this TV stop CCW,counter clock wise (closes TV), to lower idle until the ISC wakes up and take over the job of 800 rpm regulation.

if TV hits stops and idle is still too high there is a leak
so block IAC valve using sold gasket to see if it leaks as most do this old.
for sure vast places for air to leak(vacuum)

thanks for sharing, love old kicks I do. fun car, and easy to fix, only one brain i car to make happy ecu,
unlike my wifes 12 brain car. ouch;