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-   -   Mystery hose (http://986forum.com/forums/boxster-general-discussions/70686-mystery-hose.html)

dlud 01-15-2018 08:04 AM

Mystery hose
 
While in the midst of my IMS/clutch/AOS project I noticed a small hose under the crossovers that does not appear to be connected to anything. The car ran great before starting my work and I have not worked in the area of the hose so my thought is that this is some type of small drain hose for condensate (?). The photo was taken from the rear of the engine and the end of the hose is circled. Any thoughts?http://986forum.com/forums/uploads02...1516035824.jpg

Porsche-Eh 01-15-2018 08:32 AM

A/C condenser maybe.

particlewave 01-15-2018 10:48 AM

Hard to see where you're at in the picture, but it looks like the power steering reservoir overflow.

dlud 01-15-2018 11:47 AM

Yeah, it's tough to capture on a photo. The hose is located under the forward intake crossover on the left side of the engine.

particlewave 01-15-2018 12:19 PM

Based on location and without a better picture, I'd say that is indeed your power steering reservoir overflow hose.

Geof3 01-15-2018 09:27 PM

Quote:

Originally Posted by particlewave (Post 560235)
Based on location and without a better picture, I'd say that is indeed your power steering reservoir overflow hose.

Yep, which can dump prodigious amounts of PS fluid all over the top of your engine and fill up all the little nooks and crannies up there (there are several☹️) not fun to clean up. Not usually a huge issue unless your PS pump is giving it up, or you hit the track. Very common for these to puke PS fluid.

Starter986 01-16-2018 02:04 AM

Quote:

Originally Posted by Geof3 (Post 560266)
Yep, which can dump prodigious amounts of PS fluid all over the top of your engine and fill up all the little nooks and crannies up there (there are several☹️) not fun to clean up. Not usually a huge issue unless your PS pump is giving it up, or you hit the track. Very common for these to puke PS fluid.

Why is no one suggesting to add some length to that hose and run it to near the ground?

BoxsterSteve 01-16-2018 03:49 AM

Quote:

Originally Posted by Starter986 (Post 560271)
Why is no one suggesting to add some length to that hose and run it to near the ground?

To dump it on the road in front of the rear tire? Neither safe nor entirely environmentally friendly.
Lengthened hose to a catch can, maybe.

Starter986 01-16-2018 04:09 AM

Quote:

Originally Posted by BoxsterSteve (Post 560275)
To dump it on the road in front of the rear tire? Neither safe nor entirely environmentally friendly.
Lengthened hose to a catch can, maybe.

It's just hanging there now. Do you think if it is overfilled, or other associated malady, it isn't going to wind up on the ground anyhow?:cool:

Catch can? Are you suggesting appropriating a canister to catch the overflow/fill and, what, zip tie it somewhere on the chassis... driving around with a can hanging from under your car?

Would the fluid only exit that hose if it was overfilled? Or, might there be a reason why the fluid would just start flowing from the hose absent an overfill?

Thank you.

Brian in Tucson 01-16-2018 05:51 AM

What year is your car? I'm in the midst of a complicated engine change on my 2001 base.* Neither of my PS pumps have an overflow hose, never heard of such a thing.
The only overflow hose I've seen on my car is the coolant reservoir overflow--which exits behind the right rear tire.

Before you started your work, did you notice any puddles?



*I'm putting an engine set up for manual transmission into a tiptronic car--requires switching wiring harness.

dlud 01-16-2018 06:51 AM

Brian, the car is a 2000 S (3.2L). No, I didn't notice any puddles. I just noticed the hose dangling under the crossovers and wondered what it was. I had not worked in that area so I knew I didn't inadvertently knock the hose off a connection.

Starter986 01-16-2018 07:01 AM

Quote:

Originally Posted by dlud (Post 560301)
Brian, the car is a 2000 S (3.2L). No, I didn't notice any puddles. I just noticed the hose dangling under the crossovers and wondered what it was. I had not worked in that area so I knew I didn't inadvertently knock the hose off a connection.

Have you considered just following the hose from the bottom up... or to wherever it leads? That might solve the mystery.

dlud 01-16-2018 07:22 AM

Yes, I thought about following the hose up. However, it is buried under the crossovers so it would mean pulling parts off....something I want to avoid as I have other fish to fry. I may change my mind once I finish my clutch/IMS/AOS project if I get a CEL. I now see that the parts catalog shows a "breather hose" for the power steering pump. I'm now thinking that this is the answer.
https://www.porscheatlantaperimeterparts.com/images/parts/porsche/fullsize/020040303.jpg

dlud 01-16-2018 07:52 AM

I did think about following the hose but it would be a pita. Looking at the parts catalog for the power steering pump I now see that it shows a breather hose. I'm thinking this is most likely what I'm seeing. See #2 on the diagram:

https://www.porscheatlantaperimeterparts.com/images/parts/porsche/fullsize/020040303.jpg

Starter986 01-16-2018 08:41 AM

Quote:

Originally Posted by dlud (Post 560310)
I did think about following the hose but it would be a pita. Looking at the parts catalog for the power steering pump I now see that it shows a breather hose. I'm thinking this is most likely what I'm seeing. See #2 on the diagram:

https://www.porscheatlantaperimeterparts.com/images/parts/porsche/fullsize/020040303.jpg

Gotcha. I, too, out of curiosity tried to follow some hoses... cables... and lines then stopping when I thought about how just 1 brittle hose could put a dent in the day.

Breather hose makes sense. Maybe an expert can chime in and explain how PS fluid contracts and/or expands under temperature... and it needs somewhere to vent.

Or, did I just do that?

In any event... if Porsche designed that line to just dump the fluid wherever... then my wherever I'm going to give some consideration.

Cheers!


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