Will not blow on defrost or floor seperately.
How to fix vent only blowing on floor.
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Any one know what i need to do to fix this problem.
In case only one vent shows the problem you may be having a problem with a disconnected or leaky duct a crushed duct flex or a closed damper.
Air also only blows on high setting not at all on any other setting that i can tell.
But air only blows out in the defrost mode and the vent position.
Is this an easy fix.
Hardly any out of the front upper vents and or defrost vents.
Easy step by step guide one how to troubleshoot and repair vent low air flow this article pertains to most vehicles.
How to fix your a c when it stops blowing through the vents from time to time.
It s diverting to defrost because of no vacuum which is the main problem.
Yes i have a 2003 f 150 supercrew and the a c work and the heater works.
Air blows out from the floor vents great.
The air won t blow out the dash vents.
It blows out the floor vent and the defroster vent but it won t change and blow out the dash vent.
Im sure theres a door or damper that controls that but i dont know where it is.
This door is controlled by a thumb wheel that when activated will open and close the vent air.