ok i am working with a friend wh ofits under the dash a bit better than i do. he has also taken apart dashboards, glove boxes etc. so i suspect we will have to coninue disassembling as we get further into what is wrong. as of yesterday, the driver side servo seems o be working. when the knob that directs airflow is mover from low to hi-lo to hi to defit does direct the air correctly. however turning the recirc on and off or turning air on or off make no visual change. remember that the water hoses coming into the heater radiatror are not flowing due to me recirulating that water flow from the block back into the block.
i can't get to the passenger side servo. it is blocked by a whitish plastic duct. it appears that that can be removed by one screw and some points that seem to clip together. my friend, who can't help again until thursday, says he can uncouple tthe duct. he said he is also comfortable with removing the center counsel. it looks like this will have to take place to get to the whitish plastic unit (shown on your diagram) as two halves, and to which the servos and air duct 1 and 2 attach.
am i at least partially orrect in thinking that that assembly houses the doors that block the heater radiator
air flow or allow differing amounts into the interior? i am imagining they may be stuck, or that the motors that move them are failing? are there electrical or electronic components that could have broken wires or other component parts?
i am trying to get feeling as to how deep into this assemblage of parts we will have to go. my friend seems comfortable disassmbling parts and we are taking pictures to help us reassemble.
what is the next step? i imagine taking the ducts off and maybe the servos. glad winter is not around the corner. thanks for the help and thanks in advance for what i am sure remains.