Does the intake maniford need to be "cleaned" when the EGR valve is replaced

Hello, Yes, yes, and yes. It is necessary to resolve your issue with the EGR valve. Here are photos of what they are talking about: http://www.piloteers.org/forums/attachments/2003-2008-pilot/86290d1462836594-little-help-egr-system-03-pilot-pilot_pilot-cel_pilot-diy-intake-manifold-cleaning.xps.compressed.pdf