The trouble started about a week ago. Symptoms are as follows;
1. Blended air seems to work fine, hot when I want it hot and cooler when
I move the levers to cooler. (Dual Climate controls)
2. Floor vent seems to work fine, but I thought it used to blow more.
3. Dash vents barely blow at all.
4. Defrost flows nothing.
5. No noticible differance when hitting the recirc button.
All of those above are with the changing of the switch to the correct
position and waiting a bit for the doors to operate.
So, thinks I, lets check the Defrost Door Actuator and the Panel Actuator.
I pull the actuators and measure 150 ohms across the terminals. I manually
move the doors to see they are not stuck. I reconnect the wires but don't
mount the actuators. I pull the plug out of the back of the panel switch and
plug it back in. I reconnect the battery and put the key on. I move the
switch and watch the output shaft driver of the actuators. They don't move
for several second (10-15) then I tried to move one and they both begin
moving on their own. Seems to have been stuck or maybe I didn't wait long
I replace the actuators on their respective shafts and try the tests as
above. I get the same results (low or no flow of air). You know, I don't
hear the recirc door slamming into position anymore. I can see through the
Recirculation Door Assembly and I can watch the RDA Actuator turn something
inside but my eyes are not as good as they used to be so it takes a min of
back and forth before I realize there is a door missing and something that
looks like a broken plastic shaft.
I fish around with my fingers (a talent refined elsewhere) and feel the door
laying flat blocking the downward flow of air. I moved it up to where I can
see where it broke off the shaft. Crap!
That grill does not seem removable to allow access to the door. The RDA
comes apart with 4(?) screws, two of which I'm thinking are situated so you
must tear the whole truck apart to get to them.
OK, all that for this. Is there any way to pull that busted door out and
place in a new one without pulling the whole dash out (which includes
pulling the steering column)?
(Only one B in FMB)