I brought my 2001 Ford Windstar around March of 2007. It had 110k miles on it and it drove good. Then now all of a sudden it is having idling problems. I took it up to a mechanic and they said that it was the catalytic converters and the sensors I changed them but it is still idling very rough. Took it back up to a mechanic and they said it needed the fuel injectors cleaned so I did that and it is still idling rough. I took it back up to a different mechanic and they said it needed a tuneup so I did it and it is still idling rough. I have done spent $1,000 on it trying to fix it and I have no idea at what else to try. The check engine light was on but now that the catalytic converters and the sensors are changed it has not came back on. I took it up to auto zone and had them put it on there machine and they didn't show no code. Could there be something that I am missing?