PSFred:

Thanks for the comments. I'll be digesting them for awhile.

1. I've owned a mighty vac for a year now. Use it almost every day. Hey I own three of these cars and do constant vacuum work.

2. The car holds vacuum perfect. All doors and everything else perfect......EXCEPT when the heat dial is rotated to the red section. On AC all vacuum related functions are perfect.

3. In addition, there is one setting that still causes the car to hold perfect vacuum while on heat. And that is the 2nd button of the five. The one where the up and down arrows are solid.

4. Once again, I say that these cars have personality....even when broken.

5. I have audible leaks from the settings when the 3rd, 4th, or 5th buttons are pushed but ONLY WHEN THE DIAL IS ON RED (HEAT).

6. When I put the mighty vac on the green climate control line from the engine, it leaks down. I know where the leaks are because I can hear them. They are behind the PBCU and are somehow linked to the rightmost 3 buttons. I simply don't know what lies behind it and what the actuators look like. It looks like spagetti in there and I'm only used to the door actuators.

If any of this makes more sense, feel free to steer me clear....

Thanks

Don

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DAILY DRIVERS:
'84 300DT 298k (Aubrey's)
'99.5 Jetta TDI IV 251k (Julie's)
'97 Jetta TDI 127k (Amber's)
'97 Jetta TDI 186k (Matt's)
'96 Passat TDI 237k (Don's
'84 300D 211k Mint (Arne- Undergoing Greasecar Conversion)

SOLD:
'82 240D 229k (Matt's - Converted-300DT w/ 4 speed