2005 Ford Excursion Q&A

2005 Ford Excursion Question: When I turn on the air conditioning,blows out front defrost vents

When I turn on the air conditioning, the rear ac blows ice cold but the front vents only blows warm air like just the vent is on. Fuse# 27 & 110 is good.I put a new vacuum pump and front blend door and heater valve. No luck. -
Answer 1
Poss. restricted front evap. -