One more question -- If I'm reading the peterschmidt diagram right, I don't see that the line running to the automatic transmission should run through the switchover valve at all (nor the VCV, for that matter). Is this right? Mine is running from what is marked port "III" on the switchover valve. (BTW, my switchover valve has a broken paddle which will need replaced). Ports I and II lead to what must be the VCV on my car, but I wonder if they were inadvertently swapped at some point. On my car, the line from "62" (orifice in the main vacuum line from the pump) runs down to what I'm calling the VCV near the back, outer driver's side of the IP. It runs into a "Y", one end of which enters the rear port VCV and the other of which feeds port II of the switchover valve. That would provide constant vacuum to port II. As I said, there are 2 ports on the VCV. The frontmost port runs up to port I on the switchover valve.

Strange, strange, strange. The port (III) that the diagrams indicates should feed the VCV in fact feeds the transmission on my car. In the diagram, port II is not occupied, it seems. Port I seems to be fed a supply of constant vacuum from the Y that is fed by orifices 63 & 63.

The plot thickens... hope I have not confused matters further!!!

Chris

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1992 300D 2.5T
1980 Euro 300D (sadly, sold)
1998 Jetta TDI, 132K "Rudy"
1974 Triumph TR6
1999 Saab 9-5 wagon (wife's)