I have a 2000 Dodge Grand Caravan 3.3 V6 with 308,000. Yesterday it would not start at all. After adding 2 gallons of premium gas and Lucas Fuel Treatment, it started reluctantly but spitted and sputtered. Finally I was able to get it to run. When starting from a stop, until I reached about 15 mph it would run extremely rough....

I am getting the above codes. I am not aa mechanic by any sense of the word. I know for a fact that the spark plugs have not been changed out since I bought the vehicle with a 127,000 on it 2 years ago. (Yes I drive alot)

I am planning on getting the spark plugs done today and possibly the fuel filter. I have also, somewhat cleaned the Throttle body (did not remove, thinking I should but very concerned about doing that)

Any help appreviated!

Thanks
Suzanne