My 1996 E300D (W210, OM606NA, 722.4 4-speed NON-electronic transmission) has a black vacuum line that ends in mid-air near the vacuum control valve (VCV). The black vacuum line comes from a switchover valve that lives under the ABS (but has nothing to do with ABS, that's just where it lives). The VCV has a right angle rubber connector that also ends in mid-air not too far from the black vacuum line.



Both of these items look like they ought to be connected to something–each other or something else. Maybe they're just vents–everything in the car works so I'm leaning towards the vent theory. I can't find anything in the DVD version of the FSM or in EPC that describes this area in sufficient detail. I would appreciate if someone with the same car would look and see if theirs is the same as mine or if different, how.

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970