Why does my car keep ctting off and riding rough? on 1990 Mercedes-Benz 190E

Replaced fuel pumps and filter also was using Lucas fuel injector cleaner aand the car was running fine. Now that I have run out it cuts off when I try to take off or switch from like reverse to drive

Asked by for the 1990 Mercedes-Benz 190E
spark plug cables, a tune up would do the job