is the gas in the tank a year old? old gas can make a car not want to run well... also the contacts in the ignition switch could be worn out.... my mustang was having a similar problem, if held pressure on the key it'd run second i let go it'd shut off just use some wire with aligator clips and run from your battery to your coil positive terminal, then jump the starter solenoid and see if she fires up and runs continuosly ... thats the under the hood method of stealing an old car