al of the airflow comes out of the defrost vents regardless which setting is chosen
Oct 20, 2012 at 5:35 PM
2004 FORD F-250
EDFORD
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check for vacuum leaks under the hood to inside the truck.
there are mode doors that can get jammed with debris. they need to be checked.
Roy
there are mode doors that can get jammed with debris. they need to be checked.
Roy
Oct 20, 2012 at 5:37 PM
edford, can you hear anything moving in the airbox under the dash when you change from heater to vent to AC to defrost? Also check to make sure all cables, wires, and vacuum connectors are properly connected.
Oct 23, 2012 at 12:47 PM
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