Lx Civic 99

So friday after class i went to my car and (about 90 degrees outside) got in my car and went to start the car and the car ran for a few seconds before it shut off and it did this a few time where it would start and stop immediately. Let the car sit for awhile and it did the same thing. then finally it stayed on long enough so i could get home could this be a main realy problem.

Ps did it again today it was pretty warm inside the car.