I have a 2000 Ford Contour. About a week after I got the car it died going down the road and had about 1/4 of a tank of gas. It did it several times after. Then it died when it had about 1/2 tank. As long as I had over 1/2 tank of gas in it, it ran fine. Then about 5 weeks ago the CEL came on and it starting running BAD!! I took it to the shop and they said the Cam Sensor was bad, so they replaced it. After it was shut off and started again the CEL came back on. I had the oil/filter changed and a two way fuel system cleaner ran thru it. I drove it for about 5oo miles or so with the CEL on. Now it does not want to start. When the light came on, the car went, but was hesitant about wanting to go. There is a faint noise coming from the engine when it is reved up. Can anyone help??? PLEASE!!! I have only had the car for 6 months!