To check whether your issue is/was the VCV, you would need to get hold of a vacuum gauge and plumb it into the line going to the transmission modulator, with enough line to run it into the cabin and test it while driving. With the VCV installed, obviously.

If the VCV is behaving properly you should have (IIRC) ~10 hg of vacuum while driving, but this should drop to zero when the transmission shifts.

There are posts here and there on how to actually calibrate a VCV (they may be on BW) but I was not able to understand their instructions so haven't tried.

If you have been troubleshooting I assume you have renewed the rubber joints for the various vacuum connections. These puff up with age and can add up to a major loss of vacuum, cumulatively.

__________________


Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22