I'd definitely do it yourself... I am VERY new at working with my 240D and I just fixed mine by playing around with it on the weekend... The shops in the Bay Area told me between 200 and 500 dollars (all labor). The parts for the diaphram pumps run about $30 a piece. BIG SAVINGS!

My problem: a rip in the rubber diaphram in the rear passanger door. Although my system works great now (with the exception of the Cruise Control)... members of the forum have suggested that the others are not that far behind.

Question? Should the vacum valve in the drivers door make a hissing noise? I've noticed this and am unsure if this an intentional design.

SB
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1981 240D, (144K)