Here in this diag what goes in 4 and 5 holes:
http://home.comcast.net/~phantoms/vacuum/egr_82_300d.jpg

I am thinking that maybe b (to transmission) should go in one hole and the line to the transmission should go in the other because someone mentioned some minimal transmission controlling is done by that box ?
Also I am wondering if you did send b directly to transmission, does that mean it is always under full vac (follow line from b to 62)? Or does 72 surge damper prevent that? Or is 62 supposed to prevent it. ? What is 62 "Orifice" for anyway?

thanks

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What Would Rudolph Do?
1975 300D, 1975 240D, 1985 300SD, 1997 300D, 2005 E320 , 2006 Toyota Prius