xaplax

update on the saga...............the vacuum pump is working......in fact it is running continuously ........pinching off the tubing at various points will allow the system to reach it's set-point and stop pumping...........thats the good news.......the less good news is that there seems to be multiple leaks in the system and the tubing is not exactly easy to trace at all........whats the deal w the tubing where it gets reduced down to a small diameter hard plastic tubing that runs from the main junction w the solenoids towards the passenger side of the car and disappears into oblivion? drdoom.........what keywords would you suggest I use to find your posts on the topic.......I just joined this forum yesterday and am entirely unfamiliar w how things work here......best ted

the shop manual just arrived.........thanks for all of your help

Barry, Thanks for your response.......the outer cable is secure in its clamp where it is actuated by the knob (as opposed to the heat/cold dial to the left where the cable wasn't......that was easily fixed) I just got the car and have zero understanding of the vacuum system and how it is involved in all of this. is there a review article or a schematic on the topic somewhere. thanks

hi there.........as the title says cabin air recirc on 95 S4 doesn't work.......the cable attached to rotary dial functions as expected however the spring loaded hinged flap under the hood on top of the air box does not respond to dial inputs......if seems there must be an intermediate lever buried under the dash somewhere but I can't find access to it.........I ordered a lotus service manual a few days ago ($450......gasp) so I can get a graphic of how the system works............any and all advise and a schematic or image of the system would be greatly appreciated. thanks