Air conditioning not blowing cold

SOURCE: Warm air from dash vents but cool air from defrost

The system just needs to get all the air pockets out if you switched everything like you said look around where the radiator hose meets where you put the thermostat in, there should be something on the lines of a little nipple with a 8 mm bolt on it i will have to pull up the exact setup of your Taurus but its the same general concept your car is fine you just have a big air pocket , what else you can do is while its cold right now and the car isnt running is to go take the radiator cap off the radiator and see if the antifreeze is low now that the car has cold down since you last ran it. If so feel it up top it off in the radiator and it might hurp it self and remove the air pocket all on its own... If you need any more help feel free im always on here id be glad to help more in detail once you try that and look under the hood for the bleeder ( the thing with the nipple on it) Also if you could please rate me i would greatly appreciate it.

Thanks,
Steve

SOURCE: Luke warm air blows out of vents only when set at

you may need to flush directly through heater core hoses...disconnect hoses and flush through both ways until runs clear...you may have to remove heater core to accomplish this...if clogged bad replacement may be necessary

SOURCE: Heater blows only luke warm air.

check control swicth

SOURCE: I have a 2001 Ford

You need to have a pressure chek done on the engine cooling system. this will tell you if you have any leaks. some that you can't see. this is the main reason for loosing heat constantly.

SOURCE: my 96 corisca blows heat on floor but wont blow from vents

blocked vents or not opening properly