Sorry. I'm not an expert on heater boxes. I posed your problem to my cousin who had an actuator problem on his '97 Ranger. Here is his reply:
By actuator, are we talking the blend door? On the truck there is the blend door that is turned 90 degrees by a motor that is mounted above it. To get
at the door itself, I emptied the glove box, tipped it forward, and at that point, could see the heater/air box assembly. On the back side(seat side) left side, I cut a hole with the solder gun. Made the hold big enough that I could get my hand in. Put hand forward as far as you can reach and feel to the right--that's where the blend door is. A Ford mechanic told me that sometimes people put stuff on the dash, it falls down through an opening and jams the door, sometimes breaking the door. In my case, the top of the door shaft where the motor goes in was partly broken. I glued a small piece of plastic to the motor shaft, trying to get the door to turn with half of the
shaft missing, Make sure to put some lube on there, otherwise will squeak, and bind. My guess is that if it's making some kind of clicking noise, there will be some foreign object in the box. Feel around, and make sure to check behind the door in that compartment. The door without the motor
mounted moves real easy, and on the ranger, will give you full heat without the motor. Hope this helps. You should have plenty of room to work on it
with the glove box tipped forward. If you are going to pull out the whole assembly, not worth the grief or cost. When done, cut a piece of tin, etc, and mount over hole, and fasten with 2 screws.
Tuesday, December 15th, 2020 AT 6:59 PM
(Merged)