I have a 2010 V6 mustang with 70,000 miles. For several months now I have been going through an exchange with the Ford dealership with a PCM issue. I was receiving error codes for emission problems but Ford stated it was my original PCM going bad. The dealership ordered another PCM which took a month to get from there vendor. That PCM supposedly went bad within two weeks which I was getting the same error codes and check engine light. Ford ordered another PCM from there vendor and that too went bad within a week. I have gone through a total of three PCMs from there vendor which the dealership's response was that apparently they had a bad batch of PCMs. I am now waiting for another PCM to come in and its been over a month. The part is covered under the extended warranty I had on my vehicle but I have not been able to drive my mustang due to the dealership stating if I operate my vehicle and due any further damage to it they will not cover it. Kinda at a lose as to how to handle this and is there possibly something else causing the PCMs to fail in my vehicle?