I was driving home from school today and my 98 zetec contour engine died. I was stopped at a red light and when i applied power to go the engine died. I restarted the engine and limped home with the car. The car does not have a lot of power now and just doesnt get up and go. Any ideas on what the problem could be. I just had the oil changed in it and new brakes put on. The car has 62,000 on it.