im fairly new to the z sceen. i recently came in to a issue with my 95 300zx na. i was driving home from work when my car stared to hesiate and seemed to be cutting out. i pulled over and the car ran rough for a moment then stalled. i turned it over again and it started but ran rough.had to keepgiving it gas to keep running. it would go and run fine one minute and act up the next. i got it home like that. now when i start it up it idels werid and stalls. any idea where to start.