..for the weather temperature.

where is it located on an 07 expedition?

Just curious

 

if you have the auto climate control look for button that says ext.

 

I think he means where is it physically located, somewhere near the intake, i just about always reads the same temp, it may actually be the same sensor.

 

I think its behind the radiator mounted to the frame.
looks like a relay.

 

The external temperature on the dash always matches the intake air temperature displayed on my Interceptor scan gage -- when I've compared the two, I'm not watching the two temperatures constantly.

I suspect the dash gage is reading the same sensor the computer is reading at the intake.

-- Chuck