After making use of aNUT"s an extremely helpful subject to aid me re-do my vacuum lines, I decided to re-make his diagrams into much more complete, readable, printable, noob-friendly forms. I supplied his diagrams in combination with TonyJetta"s labels. They"re shade coded so that you don"t begin looking in ~ one and also accidentally look in ~ a different one next time you take it a glance. I called the thread very verbosely come hopefully have this object come up as soon as such a topic is googled.Here space vacuum diagrams for a stock ALH, ALH v EGR delete, and also ALH v EGR and also ASV delete.Images are thumbnails. Click for full-size.

You are watching: 2004 vw jetta vacuum hose diagram

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Of course it goes there is no saying the although these room the "shortest" paths, these are not the just options. Please let me know if ns missed miscellaneous or messed miscellaneous up.
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JoinedAug 24, 2009LocationKansas, USATDI2000 Beetle, 2000 GTI ALH swap, 2006 Jetta, 2006 Jetta, 2008 Mercedes GL320 CDI
On the diagram with the EGR and ASV removed, would certainly it clean points up come delete the vac reservoir too? I"m pretty sure it is only supplied for the ASV. That would clean points up also more. I"m not entirely sure around that but I think I"m gonna give it a try.
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N75 the controls your turbo runs on vacuum, but much more importantly your BRAKES.

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JoinedAug 24, 2009LocationKansas, USATDI2000 Beetle, 2000 GTI ALH swap, 2006 Jetta, 2006 Jetta, 2008 Mercedes GL320 CDI
The brakes and the N75 space hooked straight (more or less) to the vacuum pump. I was referring to the vacuum reservoir. I think, though I"m not completely sure, that it is only provided for the N18 and also N239 operation. Diagram 3 has no N18 or N239 so the wouldn"t require a reservoir if my concept is correct. Walk anyone know for sure?
I have actually a 2000 jetta tdi i simply removed the Asv and it would certainly seem I broke the vacuum actualor, is the turbo still gonna spool okay or did i kinda screw myself over?
just the plastic one, ns figured it simply opens and closes the plate the (no longer) block the waiting from the manifold. Am i ideal to assume that?
You are correct in what the does, yet I doubt you are a little bit unclear on when it does it. First, if you simply block off the vacuum hose to the broken unit (or you deserve to leave it on as long as the rest is the usual linkage break, which will certainly not influence the vacuum system), climate it will certainly not influence turbo operation at all. For sure the ASV butterfly is addressed in the open position - by string, tape, tywrap, or its very own spring - if the affiliation is what is broken. Note that several have actually repaired your ASV linkages with lasting success - despite the threads may be difficult to find. The ASV is only relocated in two cases. Otherwise the is completely OPEN top top a diesel engine.Case one - every time you shutdown the engine, to protect against a shuddering stop.Case 2 - once the EGR valve throttles, gets practically closed and also still demands to alleviate fresh air intake. This is a an extremely rarely needed feature, and losing it will not affect engine procedure at all. While countless people totally remove the ASV, I choose to save it functional, as it is a possible defense because that a runaway engine.