So, guys, I have now changed my ET (after catostrophic failure), change the thermostat/housing (went aluminum) and I still have NO HEAT! Gonna try to do the water pump tomorrow. Need to double check the HCV. I tried checking it when I did he t-stat and I think it was workin.
If this doesn't do it, I might need to request a team effort on ripping the cooling system apart to find the issue.
I'm amazed I haven't gotten frostbite yet!