vacumn door locks inopt 89 300E

[Bob G]

I know it has been discussed before, but please help me look in the right places to diagnose this problem.

The vacumn is not locking and unlocking the locks on the 1989 300E the driver door lock works manuallybut will not close the other locks with its vacuum. also I was told the fuel door would not open and lock so I was able to fine the emergency reease to open the fuel door.

Second problem. On start up ignition with key to run engine position the car ran like it was on two cylinders. I restarted the car again and it was fine. all the emergeny lights were on with the key in #1 position before crank. I have a complaint of stalling and the lower row of lights going after it stalls sometimes at a traffic light , before I have to restart the engine. could this be a OVP modual??? The car has 130,000 miles the fuel pumps were changed last year and the distributor cap and rotor. spark plugs are stock and new wires look ok.
Any thoughts would greatly be appreciated. Just let me know were to look for this information Please!!!!
Sincerely
Bob Geco310-839-8337 office