3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
I have a 2003 1500 4.7 with a heater issue. When I turn the heat on full blast, the fan sounds like its full blast, but very little heat comes out. Its like its on low. Would this be those "doors" I've seen in other posts? Please help!!!
Sounds like your re-circulation door has dropped down on top of your airbox.
Pull the fan motor underneath the passenger side glove box. There's 3 screw/bolts that hold that thing up in place.
Pull it down and stick your hand up into the plenum chamber.
The re-circ door will most likely be fallen down across the blower fan hole.
You can pull this out and then go the Heater Treater route as I did for a full repair.
When I did this repair to my re-circ door, I managed to refit the new replacement door without having to chop/cut any of the HVAC box as Heater Treater suggested.
The repair looks all stock from the outside