2004 Durango Many Problems Help Please

:banghead: First P0171, P0174, P0700 came up on the check engine light. 174 and 171 are oxygen sensors. First the reprogrammed it (the dealer) then they came back on the next day. They had the car for three days after that. they replaced it this time. Two days later p0700 came back on. When i come to a stop or reverse the car stalls out. this will be the third time i have to take it back for the same problem. I have read many problems and a federal investigation on this. What should i do. I still have factory warrenty on it but i should not be going back and fourth like this. Am i gonna need a new engine, wat is the problem. 2004 Durango with Hemi Limited.

Call the Dodge customer service line. If it is a common enough problem, they will either fix it for free or pro-rate it.
If they deny the problem, printout the investigation and take it to the dealer, hopefully that will be enough information for them to repair the problem.
The dealer probably doesn't know what the problem is and just replacing one thing at a time until fixed, unfortunately you are stuck waiting for them to fix it. They have resources available (factory tech's that can help them over the phone, or even travel to the vehicle). They just prefer not to have to use them.