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Old 10-20-2018, 10:39 AM   #1
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What is this tube?

Hi all,

After having gone through the tedious task of removing my alternator I found this cracked tube behind it.

It is placed directly behind the alternator. The picture is taken from inside the car with the inspection hatch removed.

The inside of the tube has some light oil remains.

Is it something for the AOS?



Thanks in advance guys

/Crib
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Old 10-20-2018, 11:22 AM   #2
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ves, vents the head on opposite side of the engine over to the aos. part # 996.107.147.55
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Old 10-20-2018, 11:39 AM   #3
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Aha. thanks.

Is this the same as the vacuum air filler tube? Meaning it cannot/should not be fixed with heat resistant tape, but rather fully replaced?

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Old 10-20-2018, 12:32 PM   #4
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Man I don't ever doubt what TRK says but in this case, well that is over bank 1 and looks to just be wire loom cover to me. is there a split on it lengthwise and wires in it? The part TRK is referring to goes to the PCV on bank 2.

Last edited by 911monty; 10-20-2018 at 12:45 PM.
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Old 10-20-2018, 05:35 PM   #5
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No, TRK is right. Should be replaced.
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Old 10-21-2018, 03:53 AM   #6
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Quote:
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No, TRK is right. Should be replaced.
Part # 996.107.147.55 looks zero like that illustrated in the picture. TRK always is spot on, but this isn't meeting the acid test. Are you suggesting that the part in the OP illustration was wrapped with wire loom, because it looks like there's a fairly lengthy run of loom. If you run the part number, it appears at the bend there is maybe 4 inches of the loom-look. The OP illustration looks zero like that.

Someone else have an idea/recommmendation? Maybe OP can share what lurks beneath the loom. Wire? Hard plastic pipe?
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Old 10-21-2018, 08:10 AM   #7
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This is not a "tube" it is simply a wire harness with cracked covering. leave it alone.
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Old 10-21-2018, 11:34 AM   #8
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Hm..

It's certainly not a wire loom. Even though the surface resembles one of those, this one does not contain any wires and the inside of the tube is oily.

My own bet based on previous posts is, that it is the ventilation for the AOS.

I'm wondering if a previous owner took some other kind of piping to replace it. If so I need to investigate the connecting ends of it.

Anyhow, that's life. Almost done with a job, and a new one appears
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Old 10-21-2018, 12:07 PM   #9
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That is where the AOS breather hose passes behind the alternator, but mine is solid in that section (not ridged).
Where it passes through that section is about where the number "4" is on this diagram. Trace it back to its source to be sure.

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Old 10-21-2018, 01:10 PM   #10
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I am not guessing here. If you watch my YouTube video https://youtu.be/7OLakpX6Yj8 at around 7:30 you will see this part which I had to replace.
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Old 10-21-2018, 01:25 PM   #11
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No wires inside = vacuum. The other way to tell wire loom versus vacuum lines is loom is "usually" split completely along it's length.

Last edited by rexcramer; 10-21-2018 at 02:00 PM.
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Old 10-21-2018, 02:16 PM   #12
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Quote:
Originally Posted by NewArt View Post
I am not guessing here. If you watch my YouTube video https://youtu.be/7OLakpX6Yj8 at around 7:30 you will see this part which I had to replace.
That's definitely the AOS hose, then. I guess they switched to a fully ridged "flexible" type line at some point. Mine is definitely smooth through most of it.
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