Got a low mile '89 5.0 automatic and drove it about 35 miles today on Interstate. Pulled into a store parking lot and came to a stop. It died, before I turned it off. I turned key off and then tried to restart and it started fine. Did it a second time after the drive back home, went dead in the driveway before I turned key off. But again it started right back up! Any thoughts? I have not had codes checked yet.

Thanks!