Hello. I have a 98 Jeep Wrangler. The story behind this is when I bought it, the Jeep had hardly no air flow, and would not heat up at all. We flushed the heater core hoses and now it has great airflow, however it still does not create heat, if anything it is slightly "warm".. I have researched this a decent amount and have tried several things. I read it could be the blend door. So I messed around with it and determined it worked just fine, because when I change the temperature slider to cold, you can tell there is a difference. I even messed with the manual adjustment on it. I read online that you can see if it is making heat just fine by feeling the 2 heater core hoses after the jeep has been running for a little bit. Both felt hot to the touch. Another thing I read is that it could be the thermostat. Once the jeep is warmed up the temperature needle hovers slightly below 210. A friend told me to feel both radiator hoses on the jeep after I have driven it around for awhile, so I just went for a drive and when I got home I felt both hoses, and the hose on the top is hot, I could only hold my hand there for 3 seconds. However with the hose on the bottom I could hold my hand there forever it was not super hot. Does this mean there could be a blockage or something? Do I need to flush the radiator? I'm not the smartest car person but ever since I got my jeep 2 months ago I have been trying to learn more and more about it. Let me know if you need more detail or clarification. I appreciate any help.