Nope, ditch the lot. It is an inherent part of the issues with these engines - the EGR system messes with the engine tune and most of the time no longer functions due them being fouled up by carbon. You can simply disconnect the vacuum hoses to the EGR valve as they don't on draw manifold vacuum internally (obviously cap off the vacuum barb the EGR valve hose was connected to on the manifold or you will have a vac leak as a result).