For the life of me I cannot get the AC level past the point in the first picture.
I’ve tried to see if I could:
-manually move the control assembly from the back- Nope.
-Manually move the flap door and linkage - Nope.
-Freeing up and possible binds in the cable - Nope.

Anyone have any ideas what typically binds up on these?
(65 cutlass)

Been reviewing the assembly manual w/o any luck.
Thanks,
-peter

 

On my 71 that controls the blend door. Every time I pulled the heater box to replace the heater core I had to readjust the cable so the lever would operate correctly.


so is the a new development, or has it been like this for a while?

and has any work been performed on the system recently?

 

I got this car in the spring. After some work I started driving it and it worked but with more effort than I liked.
Now it just wont give.

Where did you adjust it?
Out on the passenger side where the cable leads to?
Theres a lever with a rod that feeds back toward the drivers side to accurate the door.

-peter

 

The adjustment is on the top of the heater box where the cable attaches to the blend door.

Really dunno if that is your issue or not.

 

It turned out to be the hinge on the door itself.
Just needed some freeing up and lubrication.
-peter

 

I had two 65 Cutlass/442's and both had to have that door lubed. Used WD40 and they loosened up.