1988 Oldsmobile Delta 88 Car stalls while driving - No one

I'm not sure about the Engine size (3.8 Litre) and think it is rear wheel drive.

I've spent alot of money trying to find someone to help with this and would really appreciate any answers.

My car stalls while I'm driving and I have to wait 15 minutes to start it again. It is so dangerous and I hate to get rid of the car. (Was grandpa's)

Thanks
Barbara