89 chrysler lebaron 2.5 convertable

hello everyone,

i have a 1989 chrysler lebaron i bought from someone it still runs but my main problem is that when you start the car its fine but when you start to take off the car will shake really bad for 5 seconds :banghead:, then it will start to take off now when it takes off and keeps going its fine but only when i start to drive i have the issue and ideas specific to whats going on