So, I'm having issues with the heat in my 04 Ram, I get heat in vents and passenger side but not drivers side or floor, air still blows out of those spots but it's cold air. I've replaced one of the doors last year and it fixed the vents but not the drivers heat. I'm at a loss, I've checked the motors and they all work, and from what I read other places is what normally causes the issue is the broken tab on the door but my remaining doors dont have broken tabs. I bought all the doors except for the recirc door because I've seen that one move. Any tips or ideas on what door it could be?

 

clogged heater cores can go funny things. I seen it happen on dodge journeys.

if you are that far into it...replace it. if the dash is back together try flushing it out.

If stop leak has ever been in the cooling system... or if the system has old fluid...it can block the heater core.

 

Im thinking you still have a door not moving properly that you gotta find.

 

some trucks that have dual climate control and has a dual blend door that can break in center an allow one side to work an not the other , but that is just what I have been told,,as mine did not have dual climate control but I replaced all 5 doors on my 2004 and it works great ,, you can check the door actuators but sounds like a blend door issue