Quote:
Originally Posted by ktmmike
Thanx SouthArk,
I will check both air modes tomorrow and see if there is a difference.
Please stay tuned.
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Have you changed the cabin air filter lately? In heat mode, the system defaults to pulling air from outside, through the filter. In A/C mode, it recircs cabin air and doesn't go through the filter. Both modes are probably a blend but the majority will come from one source or the other.
Edit: It might help to look through the section on HVAC in the FSM.