Explorer A/C does not shut off

[Crazy685]

I have a 2006 Ford Explorer, and recently the A/C does not seem to shut off. It's on at full blast, no matter what. I can control the temperature, but not the fan. No matter if it is on auto or if I set the fan all the way down to the minimum, setting, it blows at the absolute max.

What the heck has caused this? After researching it some more, it appears that I may have a blower speed resister issue, but that appears to only be when things are high.

When the air conditioning is on, it goes to the maximum setting, no matter what I move the fan adjust to, or if I put it on "auto". When I turn it all off, it seems to revert to blowing air out of the defroster

 

[ZO6_Vette]

I guess that by your statement "put it in auto"
that you have climate control not manual ac.
If that is true you have a Front Blower Motor Speed Controller and no resistors.
It is located under the dash near the blower motor.

 

[Crazy685]

Found it in the VERY LAST explorer at the salvage yard.. what are the odds! Every single other explorer had the resistor ones ( the knob A/C controls ) until the last one ( out of 40! ) I checked had one, sure enough. Installed it, good to go! $2.80.

Thanks guys