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Old 10-19-2006, 05:12 PM   #1
goldice42
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Default Confused on PCV valve replacement

I'm doing my 30k mi service on my 2004 WRX. I wanted to replace the PCV valve but I'm not sure if I have the right part.
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Old 10-19-2006, 05:19 PM   #2
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First the dealership gave me one that looked like this (not sure what part number they gave me because I returned it)


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Old 10-19-2006, 05:23 PM   #3
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Then I read on another forum that the part for the 04+ was different than the previous years and that the model number should be 11819AA001. So I went back to the dealership and got this one.


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Old 10-19-2006, 05:26 PM   #4
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Now as you can see these two valve look completely different...So anyways I took my IC off and began to look for the valve that needed to be replaced. This is the spot of the one that needs to be replaced on Imprezas < 04 year. (At least that is what I believe from reading various forums)


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Old 10-19-2006, 05:28 PM   #5
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Here is where I think the one I have needs to go. Right under the turbo outlet.


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Old 10-19-2006, 05:31 PM   #6
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Another


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Old 10-19-2006, 05:36 PM   #7
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Zoomed out


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Old 10-19-2006, 05:38 PM   #8
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So basically I'm not sure which part I have to replace, or if I have to do both, or if I don't have to do either at all. BTW each part costs $12 so they aren't too expensive if I need to do both.
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Old 10-19-2006, 07:37 PM   #9
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the first picture is the PCV valve. It has a valve in it and it rattles when you shake it. Did it for you? Your old one should rattle too, but have a little oil in it. As for the second picture, it looks like a vacuum hose connector. The pictures you supplied looks like you located the PCV valve. I don't have a WRX, but I know a PCV valve when I see one. Does it connect to the crankcase? If yes, then it is. I heard for the WRX, it is located under the intercooler. And also, when you put your new one on, put some teflon tape on the threads of the new PCV valve.
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Old 10-19-2006, 09:40 PM   #10
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You will use the AA001. It's easier to replace the whole assembly than it is to get the valve out without breaking the plastic. The valve itself is the same as the 11810AA040 most 02+ nonturbos use.

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Old 10-19-2006, 11:19 PM   #11
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Quote:
Originally Posted by North Ursalia View Post
You will use the AA001. It's easier to replace the whole assembly than it is to get the valve out without breaking the plastic. The valve itself is the same as the 11810AA040 most 02+ nonturbos use.

Brian
Do you have to remove the turbo to get at the valve? It's right under the turbo outlet and the clamps are very hard to get at with regular pliers. Any tips on getting it out?
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Old 10-20-2006, 12:38 AM   #12
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Honestly, Subaru says that the PCV valve is a non-serviceable part on your car- they didn't intend for it to ever be changed, though it really should be. You should in no way need to remove the turbo to change the PCV valve- the clamps aren't easy to get off, but once you do you can replace them with pinch clamps or standard hose clamps to make things easier next time around.


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Old 10-20-2006, 04:11 PM   #13
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That T-shaped part that you have is the correct one, and that looks like the spot where it goes. It's been awhile since i've done mine, but that looks like it.
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Old 10-31-2009, 01:30 PM   #14
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Would the placement be the same on the '04 STi? And does anyone have pics of an '04 since the ones above no longer work?
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Old 10-31-2009, 01:55 PM   #15
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Found it. n/m
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Old 11-27-2010, 04:33 PM   #16
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Exclamation video of 2004 WRX PCV valve

This was helpful in identifying the pcv valve (Subaru p/n: 11819AA001) on my 2004 WRX:


It's on the passenger side of throttle body, a few inches below. It is not the same as the older WRX's (which is screwed into the manifold, '04 pcv is on the other end of that hose). Large end of the T goes to the crankcase (straight down, hose), small end of the T goes to the turbo inlet (straight up, hose), and the metal part (the actual valve) points toward the driver side and connects to a hose that runs to a fitting where the pcv was on the older models, just under the throttle body.

To try to replace just the metal part I cranked on it and broke the plastic, so now I'm stuck for 3 days till my replacement comes in, $25 rush shipping... should have ordered it before I started messing with it.
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