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Old 02-16-2019, 03:00 PM   #1
Subirex09
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Default 2002 WRX Vacuum Hose Broke

I think this piece is related to the emissions system. Looks like someone may have bypassed part of it before, and fixed the very hose that just broke in my hands, any idea how I can fix?

Where does that hose go?
Would it be better to just heatshrink it like the previous owner must have previously done/had done?
Any idea where I can find this clamp?

All i wanted to do was replace two broken clamps and I just ended up causing more issues.

Couple pics:
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Old 02-16-2019, 03:12 PM   #2
MortonCharbo
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That goes to the boost control solenoid. I'll get the part number for you.
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Old 02-16-2019, 03:16 PM   #3
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Thanks so much, pain to replace? The other end is kind of hidden so I couldnít tell where it connected.
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Old 02-16-2019, 03:21 PM   #4
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Quote:
Originally Posted by Subirex09 View Post
Thanks so much, pain to replace? The other end is kind of hidden so I couldnít tell where it connected.
There's a plastic cover just below the passenger strut mount, and above the intake scoop, with two knobs on the top. Turn them, and pop the cover off. You should be able to see where the hose is going pretty easily from there.

In the meantime, you could also just use silicone tubing to replace that piece.
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Old 02-16-2019, 03:25 PM   #5
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Cool, but I should go from the inlet connector all the way to the boost control solenoid, not just butt connect the two broken pieces right?
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Old 02-16-2019, 03:25 PM   #6
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Those hoses get dry and brittle over time. I just broke mine this week and replaced them all (there is a similar line going to your wastegate/turbo compressor)


I went with the Cobb EBCS and a tune to run it, the EBCS came with all new hoses that seem much more stout than the stock ones. Boost is under good control now too. I'm not running anything crazy, only other mod is the Cobb DP and Accessport. Stage 2+ has some good zip!
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Old 02-16-2019, 03:26 PM   #7
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Watching a vid now, does look like an easy fix.
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Old 02-16-2019, 03:34 PM   #8
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Thank you guys for the quick replies, glad this is not a deep fix, I was pretty worried : )
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Old 02-16-2019, 03:39 PM   #9
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Quote:
Originally Posted by Subirex09 View Post
Cool, but I should go from the inlet connector all the way to the boost control solenoid, not just butt connect the two broken pieces right?
The stock setup has all those weird little couplers for some reason. If you're staying stock, I'd just replace that stretch of hose between the two couplers.

Finding the part number for it is turning out to be incredibly difficult but I'm still looking.
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Old 02-16-2019, 03:39 PM   #10
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Canít find the oem part numbers for the hose, or that clip assembly that mounts to the coolant reservoir...the diagrams donít show the parts, weird.
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Old 02-16-2019, 03:50 PM   #11
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Quote:
Originally Posted by Subirex09 View Post
Canít find the oem part numbers for the hose, or that clip assembly that mounts to the coolant reservoir...the diagrams donít show the parts, weird.


Try http://opposedforces.com or .net. Search by year n model. Those hoses are IIRC Nit in an obvious section.
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Old 02-16-2019, 03:52 PM   #12
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Found it! This is the broken hose.

807503820

Here's a diagram with some of the other parts:
https://parts.subaru.com/a/Subaru__/49287933__6023807/EMISSION-CONTROL-EGR-03MY-05MY/S11-081-03.html

It says 03-05, but it will work for 02 as well.
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Old 02-16-2019, 04:01 PM   #13
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Sweet thank you, I did come across this one after digging a while, that clip doesnít exist anywhere but I will figure something out.
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Old 02-16-2019, 04:09 PM   #14
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Quote:
Originally Posted by Subirex09 View Post
Sweet thank you, I did come across this one after digging a while, that clip doesnít exist anywhere but I will figure something out.
Just order 807503820 from your dealership. Then all you need to do is replace the two pieces of broken hose that are in there, leaving everything else intact. No need for clips or anything else.

It really is a pretty easy job once you get down to it.
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Old 02-16-2019, 04:14 PM   #15
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Much appreciated!
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Old 02-16-2019, 04:34 PM   #16
Subirex09
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Default 2002 WRX Vacuum Hose Broke

Found the clips as well, I know I probably donít need them but since they broke, just want to replace. They are both called cp pcv hose stays, and they are 2 different brackets with clips mounted on them that bolt to the intake mani.
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Old 02-17-2019, 03:25 PM   #17
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just a suggestion, if you have one down from heat cycles and age, the rest are right around the corner. And vacuum leaks are a bear on these cars. Because there are miles of vacuum lines. All different sizes and runs.

Keep a close eye on hose 1/2"- 5/8" hoses on the metal tube for the TMIC. Those are the valve cover breather hoses and they carry oil and oil vapor from the engine to the crank case and PCV system. They get very brittle and degrade from the inside out. They will look fine, maybe even feel a little compliant on the outside and are destroyed inside.

There is another post about vacuum related issues either in here or in service/maintanence. I outlined how I replaced all the vacuum lines with high temp silicone lines.

~Rob
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Old 02-17-2019, 06:57 PM   #18
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Thanks Rob! This repair I am definitely going to at least do both boost control hoses, and I will be keeping an eye on the others after this experience.
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Old 02-20-2019, 06:52 PM   #19
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Ended up getting some 5/32 tubing from advance auto as a temp fix over the weekend, worked out great.

Ordered the two actual oem boost control hoses and those two hose stays online, but the advance hose will hold me over for a week or so.

Will have to start cycling out the others little by little as well...if i can find all the part numbers : )
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Old 02-21-2019, 11:13 AM   #20
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for BCS hoses you can just use generic vacuum lines of the correct size.
the PCV hoses are preformed and are difficult to replace with generic hoses.

Check out parts.subaru.com they have many drawings and blow outs that will allow you to identify and then buy replacement parts. you can have parts shipped to a local dealer to avoid the shipping cost.

https://parts.subaru.com/Subaru_2002...d-Cooling.html

https://parts.subaru.com/a/Subaru_20...11-081-01.html

https://parts.subaru.com/a/Subaru_20...11-082-01.html
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