s13 Sr20det Idle control valve ?

[konjiki7]

What does the two rear hose barbed two ports connect to?

I have a 180sx fsm couldn't find any good diagrams that point out what hooks up to the two rear hose barbs ports...

[Hijacker]

They hook to the the two coolant lines that extend from the backs of the temp sensor housing and thermostat housing. You should see two nipples on the hard lines.

[konjiki7]

Thanks! This helps big time!

Because I have a freddy that my a friend installed as a favor i don't have all of the factory hard lines... I will have to look at how this possibly hooked up in the past...

Do you know if these lines are necessary or even worth the effort?

[compactfean]

Definitely hook up the coolant lines! I have a Freddy and its pretty straight forward. The coolant lines affect the idle going from cold start to warm up. Connect the coolant lines on the iacv to the "rail" for coolant. Connect the two lines in the back,one to brake booster checkvalve on firewall, the other to the PCv.connect one vacuum line in front to fpr and bov. Connect the other line from bottom of throttle body to intake.(it helped my idle afrs. But you can cap it off). And last. Part hook up the line from iacv to intake pipe before the throttle body.

[konjiki7]

Definitely hook up the coolant lines! I have a Freddy and its pretty straight forward. The coolant lines affect the idle going from cold start to warm up. Connect the coolant lines on the iacv to the "rail" for coolant. Connect the two lines in the back,one to brake booster checkvalve on firewall, the other to the PCv.connect one vacuum line in front to fpr and bov. Connect the other line from bottom of throttle body to intake.(it helped my idle afrs. But you can cap it off). And last. Part hook up the line from iacv to intake pipe before the throttle body.

Apparently 2 years of not working on my sr was enough time to forget how the ports of the iacv were configured. At least I still knew how to how do the swap and harness work. lol Thanks anyway for the other random info perhaps some newb will search and find this info usefully some day.

OK noticed coolant lines were blocked off. So i guess i never did have throttle body or idle control sensor hooked up. The car never had any issues starting or with idle so looks like my work is done! Thanks for chiming in fellow nico fiends