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.
If you find this information to be correct would you please enter a "fixya" rating.
Posted on Feb 14, 2009
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Sep 07, 2016 | Mercedes-Benz 300-Class Cars & Trucks
Jan 15, 2014 | 1985 Mercedes-Benz 300
Sep 10, 2012 | Cars & Trucks
Jun 25, 2011 | 1985 Mercedes-Benz 300
Aug 04, 2010 | 1985 Mercedes-Benz 300
Jun 09, 2009 | 1985 Mercedes-Benz 300
Mar 14, 2009 | 1990 Mercedes-Benz 300 Diesel
Mar 05, 2009 | 1985 Mercedes-Benz 190
979 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: