89 190e 2.6 random stall

[idriftane30]

So i recently scored running 89 190e 2.6 in pretty nice condition for $200 bucks that only needed a drive shaft center support bushing and was randomly stalling out. I replaced the center support, not im trying to figure out the random stall. So while driving around at cruising speed, every now and then it will just randomly shut off, when i pull over and put it back in park, and it will start back up and drive off again like it didn't happen, but it will do it only sometimes. So far I have changed the spark plugs, fuel filter(it was every dirty an partially clogged), air filter, and fixed a small vacuum leak. Im a bmw/vw guy so mercedes are a new world to me. Hopefully you guys can help me figure it out soon, the car is for my wife and she would love to start driving it soon.

Any ideas?