does anyone have an idea why when i set my heat to cab the air comes out the defroster...its comes out the floor when set to floor and out defrost when set to defrost.

 

vacumn operated controls, check yer supply line comming from the vac pump

 

ok ty but would a leak cause it to not work only on the cab settings?

 

yes it could......also make sure no ther vac lines are off on the supply line from the pump

 

thier is a pod under the dash that the plastic arm gets bent it works the door for it that was my problem

 

thx is the pod accessable without pulling the dash? I checked the lines and non seem to be off or in bad shape but will recheck.
This isnt a major problem butt the truck gets so much more comfy with the cab air working...especially in january/ febuary here in mich.

 

ccyes it is located right under the dash on the driver side near the center hope this helps

 

thanks a ton...i will take a look tomorrow.

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ok i found the silver ball looking thing with an arm running into it mounted on the right side just up from the floor vent and what looks more like a wire than a vacuum line attached at the bottom, is the vacuum that small?
when i manually pull it down I get air thru the cab vent.

 

Definately sounds like a vaccum line, this happended to me a few weeks ago

 

I checked the lines and there seemes to be no leaks prior to the actuator under the dash. But...I pulled the line off the actuator that works the dash vent and plugged the hole on the actuator and could still move the arm up and down with ease. That seems to be the problem...where can I get an actuator?