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Question about HVAC cable & "Flapper"

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2.4K views 5 replies 2 participants last post by  DSRankinstein  
D
#1 ·
Hey guys, new poster here. Tried to search around for answers before posting, but couldn't find anything specific enough.

I have a 2005 Canyon 4-door. I live in south dakota where the cold has plunged to -9, and suddenly, my heat seemed to stop working. The fan blows, but only cold air. I noticed the temperature control knob seemed "sticky" or stiff. I would crank it all the way to hot, and it actually turn back a little bit. Like I was getting resistance or something when turning it.

Well, the last time i tried turning it, something snapped. Turns out the cable just behind the dial snapped. So, that's obviously one problem.

My question is about the little white device pictured here that the cable is connected to, which controls the heat setting. How easy should it be to adjust that? I tried doing it manually by pulling the cable with a needlenose pliers and it seems just stiff as heck. Shouldn't it be fairly easy to adjust?

Thanks for any info.

Also, I'm going to be checking the anti-freeze as well, to make sure I don't have some problem there. Recently i was getting a P0128 (thermostat) code, but it reset itself. Don't know if that's good or bad.
 
C
#2 ·
:welcome to C'Fans.
Nothing is loading for me at the Photobucket site. There aren't any control stops, for the cables, built into the HVAC module. When the knob meets resistance, the respective door has reached open or closed position. Pulling on the control wire manually should move the door, providing that you are pulling on the inner wire. You could also drop the glove box door all they way and manually move the door mechanism.

If you had a P0128 code, that's going to affect your heat also. About 99%of the time, the code indicates a thermostat that is stuck open, preventing the engine from reaching normal operating temperature. When your engine is warmed up, you are probably seeing a temperature indication around the 1/4 mark.
 
C
#4 · (Edited)
The connection to the door on top of the case has been know to slip a gear or two. If you remove the trim bezel from around the radio/HVAC control I think you can see it clearer. I forgot if I had to remove the radio or not. These two pictures show the control in both the "open" and "close positions. Comparing those to what you have should indicate if your control mechanism has "skipped" a tooth or two.



 
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