I believe that it is the actuator valve on the EGR cooler. Can someone please confirm this for me?
Also, it looks like you can just unbolt it and replace the actuator. Can this be done. It seems that people are saying that the cooler has to be replaced and every diagram that I have seen so far does not seem to be this exact same setup. They look slightly different like the actuator is located in a different spot.
I am taking the car in tomorrow and I would like to have a little knowledge on the part.