P0400 trouble code EGR malfunction
While swapping out the EGR due to throwing a P0400 I discovered there is a difference between the EGRs on 94/95 (7ga) and the 98 (7gb). The early 7g had a wire connector on them ending in a plug that connected to another plug located between the valve cover and body of the intake manifold. Anyone know if the early version EGR can be used on the later 7g by just ignoring the electric plug? Also can someone explain how to determine if the problem is the EGR, the valve that connects to the EGR via the air hose, or how to trouble this system. The EGR is clean inside and the internal rod moves (opens) under suction.