1992 Oldsmobile Cutlass problem starting in cold weather

Engine Mechanical problem
1992 Oldsmobile Cutlass 6 cyl Two Wheel Drive Automatic

my car won t start in the cold weather unless I use starting fluid then it starts and it runs fine after that what could it be would my computer be the problem or sensor or fuel pump I took it to a garage let them have it for a week and they cant figure it out its a 92 ciera cutlass 3.3 v6