Where to put temp gauge sensor at?

[dman726749]

Ok, so i am going to install an aux tranny cooler this weekend, and since i will be in there installing things i figured a temp gauge would be a good idea....so far i have read about the temp gauges in an aux filter housing...dont really want to go down this road.....so i was thinking of insalling the sensor in a brass 't' and putting it inline with all the new tranny lines this weekend....so should i put it before the rad...between teh rad and cooler...or after the cooler, or does it not matter at all????

 

[BrooklynBay]

You would want to mount it on the line coming out of the transmission for the most accurate results. If you mount it on the return line, it will have a lower temperature because the fluid is cooled down by the cooler in front of the radiator. Some people mount it directly on the pan. This will require adding a bushing, and gasket to the pan for the temperature sensor. Some companies sell deep pans with this fitting already installed.

 

[dman726749]

so is the concensus to put it before the fluid gets cooled off???? thats what i thought, but jsut wanted to make sure...

 

[Spoofty]

I bought an iron pipe coupler from Lowes for $1.20 and welded it on the pan. It worked perfect. The Autometer weld on fitting was about $6 plus shipping. I'm just sorry I didn't have a camera to get pics when I did it. I you don't have a welder then take off your pan and make the hole where you want it. Make sure the sender won't hit the valve body. Then take the pan and coupler to a muffler shop and have them weld it for you.
There are also fittings that don't have to be welded. They use a nylon washer. But I couldn't find one that would work with my sender.
The pan is the correct place for the sender. Not the lines.

 

[BrooklynBay]

I soldered a nut onto the pan for a drain plug. You could do the same thing for the temperature sending unit.

 

[Spoofty]

The reason I used the pipe fitting is because it has the same tapered threads as the sender fitting.