The air blows cold (very little warm air) when car is at normal operating temp. It seems the colder it is outside the cooler the air is coming from vents. When it is 70 degrees outside it might blow 110 degrees but when it is 45 degrees it blows 77 degree air. The temp. Control lever does work somewhat, meaning if I move it from hot to cold the air does blow cooler. The coolant is full, the thermostat does work, both hoses to and from the heater core are hot, one more so than the other. Which leads me to think (rightly or wrongly) it is the blend door not operating properly. Thanks for your help.
Tuesday, November 29th, 2011 AT 5:43 PM