Question about 1985 Mercedes-Benz 300
The vacuum system seems to be messed up; the engine sometimes takes almost a minute to shut off; I had someome disconnect something so it would turn off immediately after turing the ignition off & it make my door locks not work (could not even manually lock the car); also the air will not blow thru the 2 center vents; I was told this was a vacuum problem.
Hello, Your vacuum was probably shut off at the yellow valves located near the accelerator shaft at the firewall. Lines from these valves supply vacuum to the door lock system and storage tank. If the engine would not shut off with these connected. one or more of the door lock servo's are leaking. You have a servo in each door, one on the gas lid and one controls the trunk lock. You can pull up the front floor mats and use a hand held vacuum tester to start checking to see which servo is leaking.
As far as your vent problem, you problem have a bad climate control servo or switchover valve.
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Posted on Feb 14, 2009
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Posted on Jan 02, 2017
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