2011 Mainstreet
#1
#2
Hey, i have a 2009 journey. i recently found myself needing to replace my heater core. it was plugged up. very low to no heat in NY winter. what i would recommend is to find out if its bad altogether or if its just plugged. what i would do if i were you is look under the sterring wheel. pay close attention to the center console wall. your heater core pipes should be around there. turn your heat on and wait for it to warm up. once warm touch the pipes (don't hold on for more than a second) this will tell you if coolant is flowing through your core. in my situation the pipe going into the core was hot and the one going out was cold. That explained that coolant wasnt flowing. I did a heater core flush (about $100 total in tools needed) and now got heat that would melt ice in seconds. If my symptoms match yours and you want some details on a flush let me know. ill post the youtube videos i saw on doing a heater core flush on a journey.
#3