dreamhope

Hi,

Can anyone share the vacuum hose routing diagram for ABZ engine?

Thanks in advance.

Razman

There is a diagram on a sticker under the hood in my car - not sure if you have one or not or if that would be specific enough for your needs.

Raz

Loree-AudiUSAParts

Dreamhope,

Hopefully this will help you out. Let us know if you need more information, and we will try to get it to you.

Thanks!

S8ilver

Here's my 2002 S8 AYS vacuum diagram. I can't imagine yours to be terribly different, but look for a sticker like this under your hood.

S8ilver

That's hardly a vacuum diagram.

dreamhope

Thanks,

I also found that diagram for the 40v engine on audipages. Since I found out the tear on two breather hoses (the front one completely rotten and busted, the back one connecting the intake has a crack at the neck), I figured it could be a good idea to have a complete checkup when I get some time.

Also, I noticed a vacuum line that's not connected to anything yesterday when I was washing and waxing the car. Want to make sure it didn't fall off when I was trying to put on those Philips SilverPlus turn signal bulbs.

Razman

I found one loose which prompted me to fix it; however, it runs between the eng. compartment wall and the fender - I can't find where it terminates.

If someone knows where all those components are (a service manual is on my to-get list) that would be helpful.

On a similar note, there is what seems to be a switch/sensor of some sort mounted under the sill on the passenger side right behind the ECU box. It has wires going to it and a long-ish, tapered white plastic fitting (presumably for a vacuum hose). Any ideas about what it is for? I'm not getting any vag-com codes pointing to it (but I did seem to have fixed my air injection system with the addition of the replacement hose, along with the two stage air intake flaps).

Thanks,

Raz

silverd2

There are vacuum lines leading from the front of the engine to each front fender well...these go to vacuum reservoirs tucked in on both sides.

The vacuum diagram (should be under your hood) in S8silver's post is the same for your engine.

The part under the cowl lip behind ECU/TCM box is the temp sensor for the AC intake...the white "fitting" is the temp probe.

Razman

Thank you o wise one - I appreciate the info.

Eric

dreamhope

In my case, the free-hanging hose is the one leading to the driver side vacuum reservoir.

If I'm not mistaken, the 32v ABZ engine has simpler routing and only one vacuum reservoir. (At least I couldn't find a hose similar to the last picture on this page http://www.audipages.com/Tech_Articl...sereplace.html )