2000 Buick regal V6 3800
series II Supercharged. Car was running fine... then gears seemed to stick a little bit... but i would let off gas and it would proceed to go in gear... It has did this on and off for a few weeks. Then One day it just cut off while driving home. I tried to start it back up, but it would not engage, similar to if I was OUT of gas. (BUt I had A full Tank) I then waited for a few minutes...it actually started up and I drove it for a second, then it cut off again. I walked home and deceided to come back in 3 hours to check on it. The car started right up..I drove it home (about 1 mile) it then cut off in my driveway. I go outside the next day, it will start up, and then after running for about 4 minutes, it will cut off again. ANY ideas would be so appreciated.