Ford Transit failure

Hi, I have a Ford Transit 2.2 During 85 hp and when I stop the engine I hear a noise, they say it is the exhaust gas recirculation valve, is it easy to change it? Also and noticed that by lost strength and that leading it to 2,500 or less thyroch, can everything come from the caudalimetro ?? There if someone can help me. thank you.

Good David. Changing it is little, 3 screws around here and a clamp by there we are going that 5 minutes.
But the problem of the pulls, I would check the car in case you have something else and save the EGR paste.
That you have a little matter ...

The EGR valve can also make you lose power and cause the pulls in the engine.