Mechanical problems

I got a cadillac deville 1995 lights inside not working right out of no where and it stalls on me turns off out of no where when I'm in a stop sign or red light and I was driving on the freeway port of houston the one that goes real high up it went 20 on a 80 could of kill myself and it takes time to catch speed some times it don't wants to go up from 60 got to let go of the gas and press it again to make it speed up can somebody help never had this problems had it standing for a year because the water pump but I barely fix it and this started happening they said I put it right for my first time they say is the crankshaft or distributor can somebody help me please it still runs and everything
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