Drain coolant, disconnect hoses at firewall, remove cluster trim, console, dash, stereo, heater/ac control assembly, remove the heater housing, and the core cover, pipe clamp screw, and finally the core. Sounds like it's in the center behind all the console stuff.
Legend to the diagram is at: http://www.hondaautomotivepart...h.jsp
Core is #4
Modified by waciii at 8:35 PM 9/8/2008