Hi, The engine emission light has come up on the dash so i plugged it into the diagnostic which came back with an 02 sensor fault which is 1 of the lamda sensors, right? However the car also has all the symptons that people have described when the EGR valve is faulty (rough idle, loss of power at steady speeds). So i took the metal pipe off that goes into the egr from underneath the throttle body and cleaned it out and i was going to take the actual valve off itself. I tried to take off just the solenoid that attaches to the egr housing by 2 torx screws but it seamed like it was bonded onto the housing by something. So what do i have to do to get the egr valve off? Thanks, Leo