I had a friend come and help take a look under the dash today. He pulled all of the lower panels and the center dash piece. Here is what we found...
The recirculation/fresh door was verified to be working correctly.
Both mode doors were verified to be working correctly.
However we could not verify that the 2 blender doors were working correctly. Both of the molded stops on the outside of the plenum box were intact and seemingly good condition.
We removed the motor and verified that it was working; and that the teeth both on the motor and the receiver were in good shape.
We could not get the bar between the two blend doors to separate and thus we couldn't test them individually.
However, when the bar was lifted upwards we could hear and feel a difference in the airflow, and there was some heat coming from the passenger side vents but not the driver side, defrost vents, or floor.
When the bar was moved downward, all heat stopped and all vents went cold.
Is there a special way to remove that bar from the two arms? We spent about an hour trying to find a way to remove it without breaking anything with no luck.
Also, I found this...
"The symptoms of blend door failure are an inability to control the temperature of the air flowing through the system. A broken door will generally fall into the down position, blocking the core and having no heat in the system.
The box is designed for either single or dual control of temperature on the passenger and driver’s sides. If there is a difference between passenger and driver’s side temperatures, the problem is with the blend door
on either a single or dual control system."
Can anyone verify that this is accurate? Has anyone ever used any of heatertreaters products? Have they worked for you?