i have a 97 sephia (recently purchased) that has started giving me trouble acting like its running out of gas. while driving at times the car will stall and if i push the clutch in and turn it off and restart the car it will go about 500 or 600 feet and stall again. the car does not do this everytime i drive it just in spells

well today on my way home from work i was about half way into my 30 mile drive when the car started stalling again, with plenty of fuel i still stopped and added more fuel, i let the car cool for about 30 minutes and drove it home with no problems

any info would be greatly appreciated.....thanks scott