Vacuum piping assembly 4efte ep91 (auto)

Frankieflowers

Member +
Hi guys. I am missing some pipe on the engine because I swapped in a Corolla E11. I need some help to figure them out. E98C2F38-8DBE-4D93-9E30-14A895B69ACF.jpegB2D9C87E-D476-4B16-8CFB-AFD96F58D7E5.jpeg
 
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Frankieflowers

Member +
For the throttle body pipes:

https://www.toyotagtturbo.com/community/index.php?threads/throttle-body-pipes.67023/
The map sensor at the back of the inlet manifold is connected by thin pipes (3mm possibly?) With a small filter valve in the middle. The 4efe uses the same setup from memory so just retain what you have and use the turbo Map sensor instead.
Yes. That is correct. What about the hoses I marked? Two pipes come from ignition box (where the spark plug comes out) and go to the air gold plugs. So the twho lower connections are for water? Where should I connect them? Check out the picture. Thanks
Are these two pipes that come from the lower throttle air or water? I don’t know where to to connect them. 2817DE98-BB3A-4091-8243-D320FD24D798.jpeg
 
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Jay

Admin
You will need to follow those two pipes back to see where they lead to.

There are two air pipes that connect to the throttle valve body on the GOLD connections. One goes to the steering rack and one goes to the vacuum block under the inlet manifold.

The other two are coolant lines that heat the throttle valve in cold conditions. One heads to the thermostat housing and the other is connected to the hard pipe for the coolant pump which is under the inlet manifold.

If you hook these up wrong all hell can break loose so triple check them manually. Don't trust someone online to guide you, I daren't guess what they are from here. Find out what those two pipes are and connect as appropriate. :)
 

Frankieflowers

Member +
You will need to follow those two pipes back to see where they lead to.

There are two air pipes that connect to the throttle valve body on the GOLD connections. One goes to the steering rack and one goes to the vacuum block under the inlet manifold.

The other two are coolant lines that heat the throttle valve in cold conditions. One heads to the thermostat housing and the other is connected to the hard pipe for the coolant pump which is under the inlet manifold.

If you hook these up wrong all hell can break loose so triple check them manually. Don't trust someone online to guide you, I daren't guess what they are from here. Find out what those two pipes are and connect as appropriate. :)
Thank you. Thanks for you I am aware of the four different pipes. Although on the throttle there are two pipes for air but one is connected to the other air pipe underneath the inlet. Hi Broad through them with my mouth and they both are free and I feel the air blowing in the system. Both are not for coolant. Problem is I do not know where they were connected on the Starlet. I am trying to figure out which box they were connected to. To recap we spoke about for pipes on the throttle that are two for air and two for water. Underneath the inlet there are other pipes and one of them is for a unknown function. The block where the wire to the sparking block is connected has two air pipes that go one on the throttle and one on the top of the inlet. Both are connected in the correct position because they were connected when I receive the engine. What I cannot figure out is those two air pipes again one from the underneath throttle and one from underneath the center of the inlet. Can you please let me know where they connect on the starlet?
 

Jay

Admin
There is a vacuum block underneath the inlet manifold, its more of a long bent pipe tbh. Thats where the throttle and the steering rack take a vacuum feed.

Screenshot_20210725-220037_Samsung Internet.jpg

So are those two pipes in your picture the ones heading down to the steering rack?

The connector on the rack is 17630 at the bottom of that diagram.
 

Frankieflowers

Member +
There is a vacuum block underneath the inlet manifold, its more of a long bent pipe tbh. Thats where the throttle and the steering rack take a vacuum feed.

View attachment 6565

So are those two pipes in your picture the ones heading down to the steering rack?

The connector on the rack is 17630 at the bottom of that diagram.
I am a bit confused because the 17630 looks exactly like the metal piece that goes in the Corolla steering pump. The FTE pump doesn’t have it. Can you show me a picture of it? I need to figure out where to put these pipes. Thanks
 

Frankieflowers

Member +
I am aware of the four different pipes. Although on the throttle there are two pipes for air but one is connected to the other air pipe underneath the inlet. Hi Broad through them with my mouth and they both are free and I feel the air blowing in the system. Both are not for coolant. Problem is I do not know where they were connected on the Starlet. I am trying to figure out which box they were connected to.

I cannot find air control calve 2 where should it be? Can I work around it or use something else?
59DA0E79-1055-49EB-940B-34E11B934486.jpeg
 

Jay

Admin
Looks like they used the same connection but moved it to the pump itself. Im guessing you don't have a starlet steering rack and you will be using the 4efte steering pump so won't have a place to put it.

Easy answer - loop those two pipes out of the equation, connect both the air pipes to the vacuum block.
 

Frankieflowers

Member +
Looks like they used the same connection but moved it to the pump itself. Im guessing you don't have a starlet steering rack and you will be using the 4efte steering pump so won't have a place to put it.

Easy answer - loop those two pipes out of the equation, connect both the air pipes to the vacuum block.
Thank you very much. Which vacuum switching i should loop them with and which pipe goes where?
0770CFE9-32FD-4658-91A9-B649A7F42D49.jpeg
 

Jay

Admin
As I said, connect the two pipes to the vacuum block.

All of the pipes are in that diagram, just a case of looking at the engine and comparing.
 

Frankieflowers

Member +
As I said, connect the two pipes to the vacuum block.

All of the pipes are in that diagram, just a case of looking at the engine and comparing.
Yes. I marked the two vacuum present in the syatem. I suppose you mean the obe ob the battery side. What if I close the loop between them selves? What will happen?
 

Frankieflowers

Member +
What I found put is that the Corolla E11 doesn’t have a vacuum pump. The 2 hoses go in the steering pump and it works as vacuum pump. How can I work this out? I’m pretty sure the vacuum pump is necessary.


A3E4B1BD-BEA4-47C7-BD44-FEE29A2D78AE.png

5D3375C3-6A14-438A-B0F1-F9386DD589F9.png
 

Jay

Admin
It just raises the rpm a bit when under load, a few people have deleted the power steering pump and just run the rack without a vacuum feed. No reported issues.

If worst comes to the worse you could do the same (delete the pump).

Think I mentioned last year that this bit of the build could be done on the 4efe prior to the transplant. Might be worth doing it now so as you know it won't hold things up mid-swap?
 

Frankieflowers

Member +
It just raises the rpm a bit when under load, a few people have deleted the power steering pump and just run the rack without a vacuum feed. No reported issues.

If worst comes to the worse you could do the same (delete the pump).

Think I mentioned last year that this bit of the build could be done on the 4efe prior to the transplant. Might be worth doing it now so as you know it won't hold things up mid-swap?
Thank you for answering. The transplant has already been done. As I didn’t know about this detail and I have never seen the FTE engine before, I researched as much as I could. As you just said it is not a priority but I do like to work things out. A friend told me that I could hook it up to that steering vacuum pump.

0B7452CC-8E71-4D5D-999B-752BC5C1BBE3.jpeg
 

Jay

Admin
Good to see progress :cool:

You've circled the brake servo?

That connects to the inlet manifold, not the power steering.
 

Frankieflowers

Member +
You've looped the hi/low boost solenoid and the evap valve. These aren't connected?
No. I asked you which of the two vacuum switches that I marked with yellow should be looped to the hoses we’ve been talking about. Tho hoses that you said modify the low RPM when steering. I asked you because I think you were talking about the one on the right side of the engine. Anyway. Could you show me a picture of the vacuum pump or switch I should loop (which hose where) the two free hoses? I’m telling you because I blew air into them and they have different paths. The vacuum rack that usually is behind the engine and has the electric high voltage alimentation connected to the spark distributor has two hoses connected to the engine and they are connected fine. Is this the vacuum houses you were talking about. I will wait for a picture to be sure. Thank you
 

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Frankieflowers

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Good to see progress :cool:

You've circled the brake servo?

That connects to the inlet manifold, not the power steering.
No I didn’t connect anything yet because I won’t do fixes if I am not sure. Can you tell me where to hook up those hoses? Do you have a picture to help? Thank you
 
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