it's a mystery...

leggy · 27-07-16, 06:43 AM

Oh its a mystery...
and I dont think Toyah Wilcox can help cuz she was more in to driving horse driven chariots than Audi's!

So Guys, it's over to you please...
the photo below is of the area between my B4 80 ABK air filter box and the 'Audi' embossed silver block thingy (not sure of its name but the throttle valve adapter is above it at furthest end as you look in to the engine bay) ->

At the bottom of the photo there are two L connector grommets; one has a breather pipe in it which connects to another L connector grommet at the nearest end of the air filter box (can't be seen in this photo), the other L connector grommet is empty.
At the top of the photo you will notice a square tab sticking out of the air filter box with a hole in it.

Found this diagram but as you will see there are no L connector grommets or square tabs with holes on the air filter box:
http://audi.7zap.com/en/rdw/audi+80+.../129-129022/#2

Now I did find a piece of breather pipe laying on my engine tray a while back but reckon I must have chucked it as it's not in any of my spares boxes, it was the same size as the other one though, so I'm wondering if this had perhaps fallen out of that now empty L connector grommet or not? -
if it did fall out, well where does the other end connect? I cant see/find another L connector grommet on or around the air filter box (or maybe I'm just not looking in the right places) so can only assume that it must tail off through the tab hole?
if it didnt fall out, well should the additional L connector grommet be empty or not?

Hoping that someone can help me solve this mystery please?

sinbin5t · 27-07-16, 07:20 PM

i can see you in a chariot leggy

mikes2 · 27-07-16, 07:38 PM

Try looking at the vacuum system diagram

leggy · 28-07-16, 07:49 AM

Okay thanks mikes2...

so link for the vacuum system diagram->
http://audi.7zap.com/en/rdw/audi+80+.../1/133-133010/

Items 4, 5, 15, 16 & 17 on the diagram are hoses & pipes of sorts, but all of those are present, so could you tell me what you're seeing that I'm not please?

[NOTE] just had another good look around my boy's engine bay again, but nope, still cant find/see/feel any more empty L connector grommets, not on the air filter box or the silver block thingy!

sinbin5t · 29-07-16, 07:52 PM

Is the silver block thingy (

love that description ) not your inlet manifold ?

missfire · 30-07-16, 08:18 AM

Quote:

Originally Posted by leggy

so could you tell me what you're seeing that I'm not please?

We're not seeing the vacuum diagram.

The vacuum diagram should be on a sticker under the bonnet somewhere and should look something like this -

That's obviously a v6 not a four pot but that's what they look like.

leggy · 30-07-16, 09:21 AM

Quote:

Originally Posted by sinbin5t

Is the silver block thingy (

love that description ) not your inlet manifold ?

Yup, that is probably the proper name for it sinbin5t

...
but think I'll just stick with silver block thingy!

Quote:

Originally Posted by missfire

We're not seeing the vacuum diagram.

The vacuum diagram should be on a sticker under the bonnet somewhere and should look something like this -

[image]

That's obviously a v6 not a four pot but that's what they look like.

Dont understand why the link isnt working for you missfire

...
and I dont recall seeing any sticker like that under my boy's bonnet either, but I will have another scout around later today to see if there is one, and will update my thread in due course, in the meantime, thanks!

leggy · 30-07-16, 10:53 AM

So, just spent a good 30mins looking for a vacuum diagram sticker missfire…
been round everything but havent found anything other than the one's I already knew about, namely:

2 plates in engine bay showing chassis number & chassis number plus KG info
stickers on various engine parts with part number details
sticker on slam panel above OSF headlight showing beam alignment info
a print out obviously on fuse box lid of fuse layout
1 sticker in the boot wheel well with the usual chassis number plus engine/paint/optional extra/etc codes
nowt anywhere around inner door area’s
1 sticker under the driver shelf with relay info

So unless there’s one tucked away under the carpets (and I’m not about to rip all of those out!) and/or it's fallen off and has been lost over the years, well it would seem that my boy doesn’t have one!

missfire · 30-07-16, 12:21 PM

Hi, yes I can see the link fine, it isn't a vacuum diagram, it's a diagram of the idle stabilisation hoses and the charcoal canister hoses by the look of it.

It would be on a sticker either on the font slam panel or on top of the radiator cowling, staring you right in the face as you open the bonnet so yes, it must have fallen off years ago.

leggy · 30-07-16, 01:23 PM

It's the only link for a vacuum system diagram that I can find missfire...
but I have now found this sticker hiding under the bonnet lid; it was tucked away in a dip behind some wiring on the right side, near the hinges and windscreen.

->

So looking now at that sticker, I can see the two L connector grommets where I have a breather pipe connected on the air cleaner (assuming that's the air filter box?), and I can also see a third L connector on the air cleaner (assuming that's the empty one on my boy?) which has a breather pipe leading to another L connector on the inner straight area of the throttle body bendy thing - if you're able to confirm this as being correct please?, well mystery solved!

27-07-16, 07:38 PM	#3
mikes2 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Polmont Posts: 2,617	Try looking at the vacuum system diagram __________________ 1991 90 quattro 20v sport 1991 90 quattro

28-07-16, 07:49 AM	#4
leggy Senior Member Join Date: Nov 2014 Posts: 1,650	Okay thanks mikes2... so link for the vacuum system diagram-> http://audi.7zap.com/en/rdw/audi+80+.../1/133-133010/ Items 4, 5, 15, 16 & 17 on the diagram are hoses & pipes of sorts, but all of those are present, so could you tell me what you're seeing that I'm not please? [NOTE] just had another good look around my boy's engine bay again, but nope, still cant find/see/feel any more empty L connector grommets, not on the air filter box or the silver block thingy! Last edited by leggy; 31-07-16 at 09:22 AM. Reason: edited post to reflect deleted album photo

30-07-16, 10:53 AM	#8
leggy Senior Member Join Date: Nov 2014 Posts: 1,650	So, just spent a good 30mins looking for a vacuum diagram sticker missfire… been round everything but havent found anything other than the one's I already knew about, namely: 2 plates in engine bay showing chassis number & chassis number plus KG info stickers on various engine parts with part number details sticker on slam panel above OSF headlight showing beam alignment info a print out obviously on fuse box lid of fuse layout 1 sticker in the boot wheel well with the usual chassis number plus engine/paint/optional extra/etc codes nowt anywhere around inner door area’s 1 sticker under the driver shelf with relay info So unless there’s one tucked away under the carpets (and I’m not about to rip all of those out!) and/or it's fallen off and has been lost over the years, well it would seem that my boy doesn’t have one! Last edited by leggy; 31-07-16 at 08:34 AM.

30-07-16, 01:23 PM	#10
leggy Senior Member Join Date: Nov 2014 Posts: 1,650	It's the only link for a vacuum system diagram that I can find missfire... but I have now found this sticker hiding under the bonnet lid; it was tucked away in a dip behind some wiring on the right side, near the hinges and windscreen. -> So looking now at that sticker, I can see the two L connector grommets where I have a breather pipe connected on the air cleaner (assuming that's the air filter box?), and I can also see a third L connector on the air cleaner (assuming that's the empty one on my boy?) which has a breather pipe leading to another L connector on the inner straight area of the throttle body bendy thing - if you're able to confirm this as being correct please?, well mystery solved! Last edited by leggy; 30-07-16 at 02:18 PM.

27-07-16, 07:20 PM	#2
sinbin5t 4 ring whore! Classic Audi Club Member Join Date: Jan 2010 Location: Where a spike points skywards Posts: 12,960	i can see you in a chariot leggy

29-07-16, 07:52 PM	#5
sinbin5t 4 ring whore! Classic Audi Club Member Join Date: Jan 2010 Location: Where a spike points skywards Posts: 12,960	Is the silver block thingy ( love that description ) not your inlet manifold ?

30-07-16, 12:21 PM	#9
missfire making wooden things Classic Audi Club Member Join Date: Dec 2009 Location: cow land Posts: 8,154	Hi, yes I can see the link fine, it isn't a vacuum diagram, it's a diagram of the idle stabilisation hoses and the charcoal canister hoses by the look of it. It would be on a sticker either on the font slam panel or on top of the radiator cowling, staring you right in the face as you open the bonnet so yes, it must have fallen off years ago.