What makes a car turn on? Hmmm... fuel,spark,and compression. Check your spark, then fuel. That is where you always start. As for the relay look under the das on the drivers side and by the hood relase there is a small box that says "Main Relay" You may have to remove the lil ashtray in the drivers corner(only 3 screws) After you found it take out the relay and put a jumper wire from 5 to 7 and turn the key...you should hear the fuel pump turn on but don't start the car. Let it run for about 6 secs. then take the wire out and replace the relay and try and start your car. But I doubt it is the relay because it wouldn't cause you car to stop while driving..prolly the igniter. My advice is go buy a helms or haynes book for your car.