Hi guys, First post here! I recently bought a $1000 KJ as my first 4x4 and she's a bit rough around the edges! I was looking for a nice XJ, but of course finding a 2-door manual that isn't wrecked is impossible and the KJ was definitely in my budget. Also, who doesn't like a project?! Oh, and I can scratch up the KJ in the bush without any worries. The problem: Very weak heat from the HVAC system! There IS a difference in heat from full cold to full hot, but it is weak. The heat is like dog breath (minus the stink). Not enough to stay comfortable that's for sure. Fixes thus far: - I found the coolant hoses running to the heater core were dead cold and the aluminum pipes they attach to were also cold up to half way through. I removed the hoses and blasted them with water and now they flow well. The heater core hoses were still cool though, but at that point there was a tiny bit of heat in the cabin. - Today I flushed the heater core and now the hoses going to the core through the firewall are piping hot, but the heat in the cabin has only improved by a couple degrees. Perhaps the heater core is partially clogged and is only heating in a certain area? The water flow through the core seemed to be pretty good from what I could tell. Operation notes: - When the fan is set to "4" the air from the vent is barely warmed. At fan setting "1" there is noticeable heat from the vents. - This heat issue persists across all vent settings except in the AC settings where the temperature drops a bit. - The heat can indeed be adjusted from cold to hot and the cold is indeed cold, but the hot is just lukewarm. There is a difference in the sound of the airflow between the hot setting and the cold setting, so something is happening in there. - Temperature gauge on the cluster is dead on center. The engine seems to be heating properly. Upper rad hose is hot. Conjecture and Questions: - I would *guess* that the heater blend door actuator is possibly malfunctioning, or maybe it is the blend door? Could the blend doors be broken? Do the blend doors on the KJ break often like they reportedly do on the WJ? PS: Thanks in advance for any help! I'm pretty excited about this Jeep. I bought it on a whim and thought it was a bit puffy and silly at first, but after digging into it a bit I'm really stoked on this thing actually. I'm coming from owning an E36 BMW (my current daily) and a Mini Cooper, so this is a real strange beast to me and I can't believe how beefy it is built! I found the build sheet for my KJ amongst the service records and was super stoked to see it has the tow package and the Trac-Lok LSD! I've got a whole bunch of parts on order to refresh all the fluids and basic maintenance stuff. Hoping to get this thing reliable enough to go off into the forest this summer! Lots of cleaning to do too and I'll be repainting the rims bronze.