I know there has been alot of posts about heat problems, but I havent found any of them to be like the problem I have.
My 1999 Taurus SE with the regular heater wont blow hot, the fan works but not the heat.

Sometimes I might get a little luke warm air but by the time it reaches me in the drivers seat it cold so I cant use it. [Incorporated from 2nd new thread by rc06 -- other thread deleted -Rod]
Ive replaced the temp control switch, but it didnt help.:aus:

Are both of the hoses, inlet and outllet, for the heater core warm? If so, check the coolant level out and check to make sure th thermostat isn't stuck open.

You either have a stuck open thermostat, a plugged heater core or a bad water pump. Or possibly a combination of them. Do you have enough coolant in the bottle?