E450 hvac problem
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E450 hvac problem
Greetings!
I'm new here. Subject is a 2005 E450 chassis mini MH. The hvac works okay till engine warms up, then warm air comes out of the vents no matter where the hvac controls set. Leads me to believe that outside air is routed through the heater core. Suspect vacuum leak or vacuum motor quit working. All help to this old timer appreciated.
hilcntry
I'm new here. Subject is a 2005 E450 chassis mini MH. The hvac works okay till engine warms up, then warm air comes out of the vents no matter where the hvac controls set. Leads me to believe that outside air is routed through the heater core. Suspect vacuum leak or vacuum motor quit working. All help to this old timer appreciated.
hilcntry
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