My 3.0 was diagnosed with "bad EGR flow". I took the EGR off and cleaned it (wasn't that dirty/not to much carbon build up) and it seemed to work when bench tested the old fashon way, by sucking on it.
My next guess is the control solinoid. I"m hoping the EGR port into the manifold isn't clogged.
Does anyone have any insight on this problem? I'd appreciate any help/hints. Thanks.