2002 Dodge Caravan Heater blows hot, then cold

[quote:19a006308c="gsstraha"]Heater problem
2002 Dodge Caravan 6 cyl Front Wheel Drive Automatic 149000 miles
----------------------------------------------------------------
After engine warmup, when I turn my heater on, it blows very hot air, followed by a gradual cooling to nearly cold. If I turn it off for a few minutes and turn it back on, it again blows hot air, followed by gradual cooling.

I suspect the blend, a/c, or mode door actuator or the a/c heater control module. How can I test to find out which actuator, and how do I ensure the acuators are receiving the signal from the control module? Oh yeah, do I have to pull the dash to access the door actuators?

Also, any other ideas would be greatly appreciated.

Thanks for your help...Scott[/quote:19a006308c]
YOU Can disconnect the blend door
and give it a run
It sound to me as if the coolant low or the heater core need flushing
check thermostat