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Old 07-19-2002, 10:34 PM
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Join Date: Feb 2002
Location: Eugene, OR
Posts: 48
280E Vacuum Question


Car just got back from the shop for a few small things. He said the right rear door had the vacuum leak, so I'm guessing the actuator/diaphragm there. He said he disconnected it from the system so it would just work like a manual lock and the leak would not affect the rest of the system until the part came in and could be repaired. However, the car still isn't holding vacuum more than a few minutes.

I guess my basic question is does this point to any other problems/solutions? And, I hear on most MBs that the gas flap and trunk use vacuum, but my gas flap can always be opened and closed by hand. Should there be vacuum lines there and could that be affecting the overall vacuum system? Thanks in advance for any help
78 280E "Sally" 130k
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Old 07-20-2002, 11:43 AM
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
You need to redefine overall vacuum system.

The door locks including trunk and gas flap are just one of the various vacuum operated systems on your car. If you still don't hold vacuum then you still have a leak. The vacuum locks in the trunk are often disconnected and plugged when that gets the rest of the system working.

Vacuum losses in other systems can cause the door locks problems. Lots of info in the archives.
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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