What part is this

[Zrain25]

Passenger side on the the firewall near the abs. Had nothing hooked up to it only the electrical connector. I think it is part of the charcoal can but idk . Do I need this like I said nothing was hooked up to it only the electrical. Will it cause a check engine

 

[IndigoMKII]

heater selector valve.

 

[Zrain25]

What does exactly

 

[Grandavi]

Heater VSV allows the water to flow through the heater core when it warms up. Its generally vacuum controlled but it has an electronic solenoid on it that is supposed to shut it when your climate control is set to 18 C (coolest.. not sure of the number in F) so that you can run the AC colder. Most of the Supras I have seen (mine included) had the solenoid bypassed because it failed (simple vac line reroute) and you wont notice it.
Yours has the white plug showing so the solenoid is on that valve currently.
If yours had no hoses going into it, chances are your heater core leaks and was bypassed. (not a fun job replacing the heater core because its the last peice of the puzzle when dissassembling the entire dash).

 

[Zrain25]

What does it do exactly

 

[IJ.]

What does exactly

Hot water into the Heater core.

 

[Zrain25]

So do I need it or can I remove it

 

[Zrain25]

Or should I clean it put it back and just plug the electrical back into it

 

[IJ.]

So do I need it or can I remove it

Do you want a Heater that works?

 

[Zrain25]

Or should I clean it put it back and just plug the electrical back into it

 

[Zrain25]

Opps double post. I'm gunna put it back the way it was. Everything was working then so everything should be good

 

[Grandavi]

There should be coolant lines running to it... was it just sitting there without any lines running to it?

 

[Zrain25]

Yup

 

[Zrain25]

Just a electrical connection was hooked up

 

[Grandavi]

Well.. that part is probably already circumvented. Normally you have two hoses running to it.
Funny how the TSRM has no mention of it that I can find.

if you go to this link.. go to AC-36 and you will see a pic of its location/hook-up (ableit.. small)
http://www.supracentral.com/foundation/tsrm/air-conditioning/

maybe this will be visible too...

 

[IJ.]

I'd suspect the heater core is blown if there are no hoses...

 

[Zrain25]

T

 

[Zrain25]

Well this is where it was are these the two hose. He has them connected I didn't do any of this. The heat works fine

 

[Grandavi]

nm.. I just read that your heat works fine. Not sure why he circumvented it...

 

[jdmfreak]

Looks like "he" bypassed it for some reason