It s diverting to defrost because of no vacuum which is the main problem.
How to fix vent only blowing on floor.
Yes i have a 2003 f 150 supercrew and the a c work and the heater works.
Easy step by step guide one how to troubleshoot and repair vent low air flow this article pertains to most vehicles.
Air also only blows on high setting not at all on any other setting that i can tell.
2002 ford f150 supercrew 4x4 a c only blows on vent and floor defrost.
Hardly any out of the front upper vents and or defrost vents.
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It blows out the floor vent and the defroster vent but it won t change and blow out the dash vent.
But air only blows out in the defrost mode and the vent position.
How to fix your a c when it stops blowing through the vents from time to time.
Im sure theres a door or damper that controls that but i dont know where it is.
On the other hand if you experience weak airflow in multiple vents the problem may be blower issues air duct problems small or blocked return vents a dirty air filter or a frozen evaporator coil.
The air won t blow out the dash vents.
This door is controlled by a thumb wheel that when activated will open and close the vent air.
Any one know what i need to do to fix this problem.
Step 1 most air control vents are equipped with a flow control door that is located at the vent outlet.
Is this an easy fix.