Okay. So the line going into the top of the vcv tees and one line goes into the top of the vcv and the other line goes to the transmission. Assuming this is set up correctly I have the following results.

At idle in park I get a reading of 17 going into the vcv. Then the line going to the transmission reads maybe 1. It looks like the vcv is leaking and stealing the vac from the transmission. It makes sense that the vcv would have the ability to regulat the vac from high to zero, but should it be sending no vac to the transmission at idle. Also when I rev up the motor the vac line to the transmission remains at zero. Maybe you have to be ingear for the line to the transmission to have any vac.

Is my vcv shot?

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1998 E320 150,000
1980 300SD 240,000
1965 190D 79,000