Not getting heat from heater even though blower is OK. 2nd Time. Is there a recall on 2002 Ford Taurus

Hot air stops blowing out of heater. I put heater on for the first time since summer this week and I started getting hot then cold air from the heater. Levels are fine on fluids. Air conditioner works great but the hot air turns cold. If I turn the heater off for a minute then back on I get heat for a minute or two or I noticed when I was driving on the expressway and going 75mpg I would get heat but when I slowed down it turned cold. A couple years ago I had the same problem and it turned out to be a metal hose that circulated the heat had rusted thru so the hot air was going outside and cold air from outside was being blown into my car. This hose was located right up against the front panel of the engine

by in Belleville, MI on October 23, 2010
2 answers 2 comments
ANSWER by on October 23, 2010
heater core could be clogged Roy
COMMENT by on October 23, 2010
how could this happen
ANSWER by on October 23, 2010
No recalls on this, FYI. Roy has a good thought on the heater core, but you could also have a thermostat issue causing the engine not to get to full operating temperature. You mention the air "turned cold" - which is much different than saying it is "not hot". If it's truly cold, you also may want to investigate whether or not the temperature control is at fault. Is this car equipped with the optional Electronic Automatic Temperature Control (EATC)? If so, temperature sensors and/or a temperature blend door motor could be at fault. For the heater core, with the car at operating temperature, carefully check how hot the inlet and outlet hoses to the heater core actually are. If one is hot and the other is not, then the restricted heater core issue is a very likely reality.
COMMENT by on January 04, 2011
If the car is running cold, a code indicating that will be there.I had luke warm heat when my thermostat went bad-stuck in the open position.

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