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Old 08-28-2007, 03:16 AM   #1
BillMac
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Default 07 sti Vacuum Diagram PLEASE Help

Ok heres my probly i had a friend help me with removing my intake manifold he said he knew what he was doing but turns out he didnt i have two vacuum spots open one i think i can figure out but not sure it runs like right under the throttlebody and the one i have no clue about is on a sensor the bottem right in around where the powersteering pump is its the bottom port its open. Please help need to have my car put back together tommorow getting tuned saterday.


Thanks Bill
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Old 08-28-2007, 11:07 AM   #2
SloRice
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The one right under the throttle body sounds like the vacuum source for the PCV.

The sensor right behind the power steering pump is the gas tank vapor solenoid. This one's difficult to put back together. If you get a picture of this area...I'll tell you where it all goes.
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Old 08-28-2007, 12:50 PM   #3
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Quote:
Originally Posted by SloRice View Post
The sensor right behind the power steering pump is the gas tank vapor solenoidS.
Fixed.

They replaced the "UFO" pressure solenoid with another electric one on the 2007 cars.
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Old 08-28-2007, 12:54 PM   #4
SloRice
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is it harder to break than the older ones??

They magically seem to break the plastic ports off when you look at them funny.
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Old 08-28-2007, 01:21 PM   #5
BillMac
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If i just blocked off the open port would it run what would happen?
The perrin 3"inlet got rid of the pcv valve, but i beleive i have that hooked up right.

Quote:
Originally Posted by SloRice View Post
The one right under the throttle body sounds like the vacuum source for the PCV.

The sensor right behind the power steering pump is the gas tank vapor solenoid. This one's difficult to put back together. If you get a picture of this area...I'll tell you where it all goes.
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Old 08-28-2007, 01:35 PM   #6
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Quote:
Originally Posted by BillMac View Post
The perrin 3"inlet got rid of the pcv valve, but i beleive i have that hooked up right.
Sounds like you're not clear as to what/where the PCV valve is... Installing an inlet doesn't eliminate the PCV valve at all.
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Old 08-28-2007, 02:33 PM   #7
SloRice
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it kinda does. The Perrin inlet gets rid of the port on the turbo inlet that the PCV connects to. You are supposed to tee the PCV port in with the head breather ports and run it through a catch can.

ttiwwop
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Old 08-28-2007, 05:16 PM   #8
x99percent
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Quote:
Originally Posted by SloRice View Post
it kinda does. The Perrin inlet gets rid of the port on the turbo inlet that the PCV connects to. You are supposed to tee the PCV port in with the head breather ports and run it through a catch can.

ttiwwop
I agree that the inlet requires the PCV line and the valve cover breather line to be T-ed together, but the PCV *valve* is never touched.

I think he may be referring to the PCV diag connector... the useless gray "sensor".
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Old 08-28-2007, 05:21 PM   #9
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tomato, tamoto.
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Old 08-29-2007, 12:55 AM   #10
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Can anyone get me a picture or diagram of where the vacuum lines in the front two sensors exsplaining where they go.The pvc valve is still there just doesnt have the part where it goes into the inlet. I worked way to late today but i stopped into subaru today and they couldnt pull up any good diagrams. Please help me out.

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Bill
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Old 08-29-2007, 11:38 AM   #11
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Old 08-29-2007, 03:35 PM   #12
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in case the vac lines differ, just want to point out that the diagram posted above looks like its from an 04 STi
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Old 08-29-2007, 06:10 PM   #13
BillMac
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Mine does not have the item 21 it has a senor or relay with a plug on it.
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Old 08-29-2007, 06:11 PM   #14
x99percent
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Quote:
Originally Posted by BillMac View Post
Mine does not have the item 21 it has a senor or relay with a plug on it.
Yep.

Quote:
Originally Posted by x99percent View Post
They replaced the "UFO" pressure solenoid with another electric one on the 2007 cars.
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