1985 chevy celebrity sedan 120,521 miles

Have a problem with stalling,first the engine is a 2.5 four. Starts and runs great,but after awhile it usually starts stalling on deceleration,when you get to a stop sign. it will start up again then you put it in gear it will stall again. finally by feathering the pedal you can get through the intersection.then it will be ok for awhile.Replaced the thottle positioning sensor,replaced fuel filter,air filter,plugs,still does it? I do not get a engine lite coming on either.