blackbetty

well the guages (aftermarket) are fed by a resistor type sensor that varies to temp and then feeds to the ground. hopefully its the same type of sensor...

Mod (Ret.)

In case this helps, my readings from my SCANGUAGE II range from 141 to 155 degrees F, ranging from cool mornings to "Africa" hot days (98 degrees) in Texas.

I also installed an aftermarket transmission cooler; cut the return line from the transmission and ran it to the inlet of the cooler, then it's outlet connects to the transmission. This is the correct way to utilize both the radiator and aftermarket cooler to cool the automatic transmission. I mention this only because Ive seen and read where folks simply bypass the stock radiator cooler. Not a good idea, as you actually reduce cooling.

Keeblerz28

If I remember right, that's the way my factory transmission cooler is set up too. Once everything gets up to temp, mine usually sits about 152°

Thunderslide

I think i comprehend this correctly, you let the radiator cooler cool it first then let the air cool it second. That is how I would do it as well. When I worked for my father in his radiator repair shop.That is how we added extra cooling.

Mod (Ret.)

That's how the instructions call for as well. I only brought this up as I had a bud install one in his SUV; he completely bypassed the transmission cooler of the radiator; this actually eliminates transmission cooling. You want both (radiator and external cooler). This is how Ford (and all other auto manufacturers) do it when they add an additional cooler, such as in the towing package.

midwestoffroad

On the superdutys there is a test port on the driverside next to the linkage. you just unscrew the plug and crew in the brass sending unit that comes with the guage and then run a wire from the sending unit to the blue wire of the gauge . It is to wet otherwise i would look to see if there is a similar test port.

as for tems also in the superduty normal readings are a max temp of 100 degrees plus ambianet temprature. so is it is 80 outside the gauge max temp you would wat to see is 180. with a max overtemp of 220