my euro 79 300d has been having some vacume problems for a little while now but the problems is getting bigger. it started with the doors locks not working, then it would not shut off, then the brakes would feel rock hard sometimes, and go to the floor with little stopping power othr times. latly the brakes have been locking up. i had this problem on a old ford, it was the brake booster, would that cause all of my problems or is it the vacume pump, or both. any help would be great.
thanks a lot