Idle issue on an 89 sidekick 8v

[Freaky Beanie]

the TB is easy to test, off car, IAC.
wife at work.? Grin
super easy, in pan of hot water.
even frying pan of hot water, with thermometer clamped to the pan, and at 150f it is 100%. closed.
are you sure you cars thermostat is good, or some goofy guy put in a silly 160F stat? (or none at all, OMG) I know it's new but currently, I am unsure on the temp rating and will take a look.
you could buy a 195 (or 193)F stat and run that and see if the IAC closes. (band aid fix)
or use the frying pan to learn exactly what temperature yours closes 100% super easy.
the cars gauges in the cluster are just toys, never use them to diagnose engines, use real measurement tools. gauges.
I use an IR gun, for $15 that works great. the truck is not ready for road yet. I just let it idle in my garage (with an exhaust fan of course) I have a FLIR IR Camera so I will test soon. (Busy weekend doing plumbing for my parents so I may only have time next week )

to RAD tank after 20+ miles 100% fully hot engine.
then idled for 15mins.

[Freaky Beanie]

Currently, All TB Gaskets are stock/original. I'm also going to assume a blocked IAC would have the same effect as my putty.

the IAC will be dead if the water path flow to it is blocked,
running the wrong TB base gasket does that,

My IAC comes very hot but I will measure temperature with my Flir


the gasket there is very complex.
ever seen this.? no I have not yet

my TB slide show covers all this.
http://www.fixkick.com/IDLE-AIR/Slide_Sh...ge_21.html
here is the SMP makers kit, it is easy to get the wrong gaskets, A/T car are different as are 89/90 and 91 to 95
top right is correct.
http://www.fixkick.com/IDLE-AIR/Slide_Sh...ge_36.html


and RULE 3, these hole must be blocked. 5 hole here must be gasket blocked or be hell to pay HAHA [/color]

http://www.fixkick.com/IDLE-AIR/Slide_Sh...ge_16.html

[Freaky Beanie]

These are all used and probably have the same issue as mine . If I cannot fix it, I want to have a modified replacement. (you can get universal IAC units). My wife will be driving this sidekick and I want/need it to be simple for her.

http://www.car-part.com/cgi-bin/search.cgi

see suzuki sidekick 89
see TBs/
chevy trackers show RARE as hens teeth./

[fixkick]

your IAC is bad, time to test in in a pan of wot water.
150F it closes. fully
that assumes you thermostat in your car is 180F or higher, and actually works
yes,. me too, id not give up on it, 30 years is young if you do the work.... nobody does that, just us, and good luck to you !!!!

[Freaky Beanie]

Before taking it off, I will try to turn the ring inside the IAC as you mentioned. Just to see if it helps.
Thanks again. How did you learn all of this? Just curious.

your IAC is bad, time to test in in a pan of wot water.
150F it closes. fully
that assumes you thermostat in your car is 180F or higher, and actually works
yes,. me too, id not give up on it, 30 years is young if you do the work.... nobody does that, just us, and good luck to you !!!!

[fixkick]

why wreck the calibration , first.
first prove what is wrong, then hack it.
these TB are rare so needs extra care to now what is wrong.
the thermostat needs to be at 180first
the water flow true the IAC body must not be restricted in any way.
if all that is ok, the IAC is bad, hack away.

I'd have in in hot water, 150f and see if it closes, if it is only a bit off, turn the ring inward so it just hits the piston and no further, the test at 150f again, and repeat until it is right.
that is how to calibrate it, if you want to know..
guessing will mess up the calibration and the ECU will not like that, it knows the actions of the IAC and injects fuel based on a model of those actions. (cold)
cold to 150f and then its offline. the IAC.
hope that helps..... good luck

[Freaky Beanie]

I'm thinking that taking the TB apart will damage my gaskets. (maybe I'm wrong)
I have no gaskets and since I live in Canada, everything is slower/harder to get.

I may have found an 89 locally. I should be able to get some parts.

I will start by looking at the thermostat and test temperatures.

why wreck the calibration , first.
first prove what is wrong, then hack it.
these TB are rare so needs extra care to now what is wrong.
the thermostat needs to be at 180first
the water flow true the IAC body must not be restricted in any way.
if all that is ok, the IAC is bad, hack away.

I'd have in in hot water, 150f and see if it closes, if it is only a bit off, turn the ring inward so it just hits the piston and no further, the test at 150f again, and repeat until it is right.
that is how to calibrate it, if you want to know..
guessing will mess up the calibration and the ECU will not like that, it knows the actions of the IAC and injects fuel based on a model of those actions. (cold)
cold to 150f and then its offline. the IAC.
hope that helps..... good luck

[Freaky Beanie]

https://photos.app.goo.gl/NRCT1fBYSGAR4PoR7
Here are the temps. IAS thermostat and Radiator. I monitored the temps and the thermostat is functioning correctly.

why wreck the calibration , first.
first prove what is wrong, then hack it.
these TB are rare so needs extra care to now what is wrong.
the thermostat needs to be at 180first
the water flow true the IAC body must not be restricted in any way.
if all that is ok, the IAC is bad, hack away.

I'd have in in hot water, 150f and see if it closes, if it is only a bit off, turn the ring inward so it just hits the piston and no further, the test at 150f again, and repeat until it is right.
that is how to calibrate it, if you want to know..
guessing will mess up the calibration and the ECU will not like that, it knows the actions of the IAC and injects fuel based on a model of those actions. (cold)
cold to 150f and then its offline. the IAC.
hope that helps..... good luck

[fixkick]

the FLIR shows all is good, heat wise. nice way to test this. FLIR.
if the IAC is roasting hot like the FLIR shows, the IAC is bad if it leaks air, so adjusting it is ok, (nothing to loose only gain)

and thanks very much for sharing FLIR here,

It is shame the IAC can not be removed like the 16valve has.

good luck to you!~

[fixkick]

one can make a paper gasket in 15 min. work with raw paper gasket material sold at NAPA
and an exacto knife.
easy!
just cut it like my SMP, new gasket photos show.

the only hard part is breaching the fuel line and losing copper washers there, on the rear,, gaskets are so simple here. even CARB like simple.