My daughter's 1995 SL2 died while driving. This is the 3rd time in 6 months. She says it sputters then dies. She's able to wait a few minutes then it starts up again and drives normal. We've taken it in twice but both times they don't know what's wrong. Really?

Change gas caps and fuel filter

Does this happen when the gas level is low? What can happen is that the gas evaporative system is not working properly, and the gas tank gets a partial vacuum which the fuel pump cannot overcome. If you hear a shhhhhh sound when the gas cap is opened, that's what is is. Could also be dirt in the gas tank, Most tanks can be drained via a small plug in the bottom. Removing the fuel pump to inspect the attached filter is a possible if fiddly job.