Do I have to tear back into my dash in order to test blend door's functionality? Anyone have a recommendation or even a tutorial on how to approach fixing this issue? **** isn't the problem. zero temp change with or without ac on when i go from cold to hot positions on temp dial. ac gauges are reading right where they should. I'm pretty certain my blend door is stuck open. i'm getting hot air mixing in with my conditioned air.

 

Rx7ADK,

Do you have a copy of the BEM (Body Electrical Troubleshooting Manual)? I recommend that you follow Flowchart #5 on Pg G-21 of the BEM. If the electrical side is good then there may be a mechanical linkage problem with the Air Mix Acutator. Again, the BEM can assist you on Pg G-40.

 

I am glad you posted that info, thank you. I'll look into it. I was looking at the 93 service highlights pages that deal with the in-cab HVAC system but all it does it tell you where stuff is and what their function is. (page 401-404)

 

Rx7ADK,

Happy to help! Keep the forum updated on your progress.

 

There is a Mitchell maintenance manual floating around for FDs online. If you scroll towards the bottom of the AC section, there are illustrated, extremely easy to follow steps on how to test all the blender door motors.
If you can access the wire harness for the blender motors from under the dash, that's the easiest way to test them (I tested mine with everything out of the car)

 

 

Haha, enjoy your meat locker!