Originally Posted by openclasspro#11

c urious - where ford reads the temp of the transmission fluid temperature? before getting back to trans or before getting to cooler- curious where my scangauge 2 was picking it up from? thanks -phil

Originally Posted by Bluegrass

In very cold temps, the cold idle can go quite high but should come down in a few minutes as the engine begins to warm.
There is also a timer in the software to force it down after a certain length of time by closing the IAC.
I would clean the IAC and the Throttle body to be sure there is no gum buildup that gets rather 'stiff' in cold temps.
If the Idle returns to normal after the engine bay gets warm, it's a good bet the above mentioned is the problem.
In very cold temps. the trans fluid get a bit thicker and may allow delayed shifts.
The trans has a temp sensor on it's valve control plate that feeds a signal to the computer. This signal changes the shift times and points.
Especially, it won't allow overdrive to engage until the fluid temp approches about 90° +/-.
As you drive from a cold start, the radiator keeps the fluid cool and heats it at the engine temp rate, so it will be some miles until all temps are up to normal.
If there is a problem shifting otherwise, the PCM has control of the shift valves. The valves may be sluggish in cold temps from varnish build up.

Originally Posted by Darrin Burch

The temp sensor is in the pan just under the valve body on the internal 'hard' harness that connects the case plug to the solenoids.

Darrin