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Old 02-20-2008, 03:10 PM
oso oso is offline
'87 300TD
 
Join Date: Oct 2007
Location: San Antonio, TX
Posts: 189
central locking system failure

Quote:
Originally Posted by ctaylor738 View Post
Sort of. I've never messed with an '87, but I think in '86 Mercedes started with an electric pump setup that runs one way for vacuum and the opposite for pressure, so there is only one line to each element.
I think you are right on the money here- I can hear the pump run somewhere underneath the rear seat maybe. It cuts off after 10 sec. or so. What is the 1,2,3,.. : from the electric vacuum pump to where?
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