The expedition had started to run a little rough and the engine was dying every now and then when we came to red light or stop sign. It will always start right back up. The check engine light came on and the code said O2 sensors (rear) were bad. I decided to change all 4 and it definitely made the engine run smoother, but it is still dying occasionally when we are coming to a stop. Can anyone give me some ideas on what I should like at to fix this problem. The truck has about 150000 miles on it and we have changed the spark plugs, fuel filter and lots if other stuff during the life of the truck. Any help is greatly appreciated.
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