it should if you have the heater control in the defrost position this is to remove the moisture from the air
You have a vacuum line disconnected probably under the hood. The HVAC controls are operated by vacuum and when there is no vacuum it system goes into defrost mode.
Yes, the ac will run in the defrost position to dry the windshield.
you have a fuse out...
I have looked up time to change heater core on 2000 dodge caravan it said 2 hours. I have never done this so I need to know where to start?
On my 1995 Ford Explorer when the defrost position is selected , and the temperature knob is set in the red area to get heated air to defrost the windshield , the A/C compressor will cycle on and off to help dehumidify the air, but the compressor ONLY cycles on and off in the DEFROST POSITION ( sorry if I'm misinterpretting your question )
That means either you have air in your heater core or your heater core is being bypassed
1. heat control linkage disconnected or broken or vacuum source problems(low vaccum source or broken vacuum lines) 2. heater unit doors stuck or non functioning heater door actuators
You have vacuum line leaks somewhere.
most likely your heater controls run via vacuum lines. cracked or broken lines could cause this.
Yes they have a heater/defroster.
a heater hose runs from intake to heater core to radiator. the heater core is were the heat comes from inside the car as well as defrost