Car overheating while engine is off

[fixkick]

Hi and sorry for my late response.
Yes, my car has that plate.
Is a Suzuki Vitara CAMI yr93 g16A 8v EFI.
The CEL give me code 12
I have another TB, three more injectors and some others spare parts (luckly).
Tomorrow I'll test the IAC, both I have, hopefully one of them will work
I will post the result asap

Soon! And thanks again!
that is great news

with TB in hand make sure the valve is open cold.( the 3 tiny screws can be near impossible to remove and not break.

but you can blow though it end to end, cap still on (3 screw cap)

the in pan of hot water over 150f, say 180f , the valve is not closed.

if closed all the time that is bad  wax pellet inside dead, iAC.

cheers to you,,

IAC is sucked hard here, marked here but is 2 paths, IAC and the bleed screw path, if you close the bleed valve and no air can pass here the IAC is dead stuck closed. The ISC also supplies air to that big olipical hole below. 3 paths, to test it is not easy in hand due to 3 way flow.

5 small holes are blocked full time with gasking, the arc slot is vacuum ports (egr)







top air horn removed. this exposes the IAC intake port. and bleed.



here is even a better drawing, shows it all, note the 3 idle air paths from C down. (revised for 89 up) 89/90 has no bleed screw.
This one drawing helps greaty...

the bleed screw  sets idle DUTY cycle at 800 rpm hot to 50% PWM rate.  the ECU controls idle hot only(ISC).  IAC controls cold.