2004 ford taurus overheating

SOURCE: my 2002 ford explorer wont blow any air out of the vents...

It sounds like blower motor has failed. Motor is located behind glove box on lower part of heater box.

SOURCE: 2001 Ford Taurus blowing hot air from the vents

I have the same problem on my 2000 Taurus. I've been told by a Ford service technician that it is probably an intermittent problem where the blend door gets stuck in the 'heat' position. I have electronic A/C controls, and there is a diagnostic procedure I can do where it runs the blend door through its full range of motion, and which seems to get it unstuck. If the problem happens again (and as I said, mine is intermittent), you might try doing the same thing by turning the dial all the way from hot to cold and back again a few times, to see if it gets unstuck. Or you could try to repair/replace the blend door.

SOURCE: 1996 ford contour gets hot , no hot heater or temp guage movement

Is your temperature gauge working now? That is of more concern then your heater as you wouldnt know if your engine was overheating until its too late. Your heater core could be clogged, they get clogged quite easily. You can flush them or replace. The part is inexpensive but on some models you have to take out dash to replace them, but on other models it only takes about 30 mins and a few bolts.

SOURCE: 1992 Ford Taurus with a 3.8l V6 the cooling fan

The Taurus has Two temp sensors. One for the dash, which is isolated, then one for the PCM, it also controls when the fan relay should actuate. Its a 2 wire sensor, just above the thermostat. If you remove the harness from that sensor, and the cooling fan comes on, at any temp, (should take 5- 10 seconds) then thats your fault.

SOURCE: my ac blows hot air from the front vents

Expansion valve or orfice tube clog.to front unit.