I got a 99 ford taurus that doesn't put out any heat. I replaced the heater core and new water pump what could be the problem

Did you replace the thermostat? Are both heater hoses at the fire wall warm?

did you replace the thermostat? are both heater hoses at the fire wall warm?
No the thermostat was not replaced

Is the temp running around normal? Are both heater hoses warm ?

No temp control barely moves

Temp gauge ,or the temp control inside the car ?

No hot air either coming from vents

Check both heater hoses at the fire wall,to see if they are both warm.

What if they are not

If both hoses are warm it means flow is getting to and out of the heater core, and it might be a problem,with the blend door on the inside. It rulles out all other possibilitys up to the heater core. Such as the thermostat being stuck closed.