4age JDM throttle body pipes

[grey_nomad]

What are these pipes on the throttle body of a JDM 4age bigport for?
All are currently blocked off (removed for photo). 4age is in AE86.

I need to add idle up for the air/con - are these involved?

[STR8 2.8]

prob for coolant - throttle body heating

[WHITCHY]

Sorry!!
Cheers.
-Whitchy-

[FASTFOO]

DO NOT PUT WATER IN THE PIPE'S (unless you want to wash the inside of your engine)
The water pipe's are under the TB
A= fresh fillted air
B+C= full vac into manifold
and yes they are for a/c and p/s idle up's
Regards
MATT.

P.S. Not to be a smartass but why post if you do not know?

[grey_nomad]

Thanks guys.

As Matt says, the water pipes are UNDER the TB, and are already connected.

I only need A/C idle-up. Any idea how to set it up?

Do I need anything extra like a vac switch? I saw a thread on a Falcon vac switch, but insufficient info as to which of the pipes to connect to.

I know the ECU is connected to the A/C, but is there a connection for the vac switch from the ECU?

Where do I find a service manual for a "JDM" AE86 4age? The FWD 4age manuals are different.

[takai]

For A/C idle up you use both A and B. The idle up switch/solenoid which you will need has 2 ports and basically opens a valve between them when power is applied.

Hence, what it does is take filtered air from port A and feed it back post throttle into port B.

So yes, you need a vac switch/solenoid and a few bits of hose to hook it up.

P.s. you could use A and C, but C is just a PITA to get to and route neatly.

[WHITCHY]

Sorry, I only said "I think" to throw what I thought out there for someone to confirm or say wrong. I was only going by when I had ripped FWD 4AGs apart, I remembered there always being a vac line going to a little idle motor, and I didn't remember pulling any other lines off the manifolds that had anything to do with AC, but I guess I was wrong!
My monitor is shit so I couldn't see the other pipes under the TB.
Cheers.
-Whitchy-

[grey_nomad]

Is this the ac valve for the AC idle up? (This one's on my son's AE86 with fwd 4age).



If so, what car does it come from?

I still have the ac switch that was in my ae86 with the 4ac, so that should be OK for the electrics.