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The hot/cold blender switch works fine but the switch that changes direction of flow doesn't do anything. It doesn't matter if it's the arrow pointing at your face, two arrows pointing at face and feet, defrost, etc. It all blows the same.

What is the culprit of this?

And foam sometimes comes out of the vents, what's this from?

Are the switches mechanical or vacuum?

Thanks all.

habanero

The foam is prolly coming from the blend door. Mechanical. Blend door is above the blower motor.

Post 687-690 shows blower motor/blend door in 96 4Runner.
https://www.yotatech.com/forums/f200...1/index35.html

Post 1395 shows blend contol, again 96 4Runner
https://www.yotatech.com/forums/f200...1/index70.html

How to access the climate control in a 964Runner (you don't say what you're dealing with)
https://www.yotatech.com/forums/f200...1/index78.html

Post 2 in the same thread has a table of contents...

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hab,

Thanks for the prompt answers. I'm definitely going to clean the blower motor.

Is it necessary to replace the foam or will the temps still blend without it?

Back in my teenage days I had a 92 Jetta that the foam deteriorated on the blender door. The blender door had holes in it so the foam had to be replaced (Epic PITA). German over-engineering- save 2.5 grams by drilling large holes in blender door and cover with foam that weighs 2.4 grams. That will shave at least a trillionth of a second off your 1/4 mile times, right?

habanero

It'll still blend, I think you can see in the photos that the door is solid. The foam on mine is toast.

From that same thread rworegon posted a helpful tip:

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So what keeps the selector switch from working properly? Air blows the same from dash vents, floor vents, and defrost vents no matter what the selector switch is set to.

habanero

Do you feel any resistance when you use the selector? Did you look at the pics of the climate control where the wires are attached? Start there. The blend door won't mean anything to you (other than the foam issue) if you can change hot to cold, but likely something has become detached or broken. You still haven't said what you're working on, but there's usually a pair of screws holding the trim on behind the climate control switch, don't get frustrated and force it.

Oops, gotta go flip the pancakes!

Up&Down

Now that you mention it, there is not much resistance. I suppose the cable could have come loose. I haven't removed anything yet to take a look. I'll wait until I get the time to clean the blower motor.

Thanks again for the tips and advice.

habanero

Would love to hear what you find and pics are always a plus.