i took my car out for a nice long drive, driving moderatly hard. (91 Vert) i drove probibly about 40 miles and it was a good 85-90F when i was driving. stopped at circut city to see my friend. it sat for about 10-15minutes. got back in went start it up, it seemed to start but stuttered at 2-500 rpms, i gave it some gas and it revved right up, no probs after that. only one question, what caused that? fuel pump? leaking injectors? fuel rail? the tempurature outside? thanks.