a/c help

[Archaic2021]

So 97 silverado will not change off defrost. Put a new mode door in beside gas pedal and it still wont change.

Do you have to pull a fuse or reset it somehow?

Could it be the a.c control panel?

 

[Archaic2021]

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[Archaic2021]

Edit it's moving...but it looks like this actuator became disconnected. I guess thats why ists not change off defrost...does this look completely broken or does this snap in.

 

[Archaic2021]

OK so does anyone have diagrams to ow the actuator links move or where they should be positioned?

The actaotr is moving but I can't get the blend air to change out from defrost or floor. I can see the vents moving on the floor but something sin't lined up right.

 

[east302]

As long as the actuator dial is turning between these marks, it’s getting a good signal from the panel and should be fine. Floor setting is the 12 o’clock mark, dash and defrost are the other two extremes at 11 and 1 o’clock:

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Pictures of the linkage, maybe it will help:

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[Archaic2021]

So it is turning but I think somehwere along the line something has gotten out of alignment about to go out here and check. If I turn it on floor only at 12 o clock...and them take the actuator off and manual change the blend doors is that one way to re set it.

 

[Archaic2021]

So actuator is working but still the the air will not change off of floor and desfrost.

 

[east302]

If the actuator is cycling correctly, I would take the actuator off, disconnect the linkage arms and verify that the dampers turn freely.

 

[Donald Mitchell]

The flapper door may have come loose or hung up.

 

[Archaic2021]

If the actuator is cycling correctly, I would take the actuator off, disconnect the linkage arms and verify that the dampers turn freely.

Do the linkages actually turn antyhing or do they just hold the actuator