what's the best spot to install my isspro gauge temp sensor? The kit gives me 3 options, the sensor is 1/8 npt.Is there a port on the tranny or is the inline set up accurate?

Most suggest installing in the pan or in the hot line leaving the transmission to the cooler.

In the hot line leaving the trans.  

Best spot is in the front converter output cooler line right at the tranny where the hottest oil in the system is. In the pan or in the servo port is about the coolest oil in the system, servo port is just seeing stagnant oil and little more than case temp from my trials of it and the pan oil is the coldest oil in the system as it just returned from the cooler.

I can't seem to get the search engine here to work right something changed as there are a few posts I made with part numbers and pics of an OEM cooler line with a temp sensor port in it, I think it was used on 95 model year rams.

Is this upper steel line coming out of tranny?

Is this upper steel line coming out of tranny?

The cooling line that come out of the left front of the transmission is the 'hot line' from the torque converter via the l/u switch valve @ 5-57psi. It goes to the rear of the heat exchanger. The heat exchanger is on the engine's right side under the exhaust manifold by numbers 5&6 cylinders. The line coming out of the front of the heat exchanger goes to the trans cooler that is next to the A/C condenser. From the trans cooler the line goes to the fitting at the left rear of the transmission where it 'dumps' into the pan.

IBMobile where did you get the T fitting,nice set up ,would you know the threads on the T?With my gauge kit all I have is a clamp and insulation for external set up.

It was over 10 years ago that I put it in so I can't recall the size but it looks like pipe thread. The fitting is from a Parker store not far from my place.https://www.parker.com/portal/site/PARKER/menuitem

 

1. install sender unit into T fitting.

2. cut pipe. I used a small tube cutter.

3. take the pipe off the heat exchanger and cut off about 3/8" from it. use a hack saw for that.

4. slide compression fittings on both pipes.

5. install T fitting with sender unit on to the pipes and hand tighten the fittings.

6. reinstall pipe on to heat exchanger.

7. orientate the sender unit.    

8. be sure the pipes are pushed in to the T fitting, then tighten the compression fittings.

Whats important is to know the oil temp the trans. is picking up from the pan, you want to know your coolers are doing there job and getting the oil temps down so they aren't hurting the trans..  Oil coming out of the trans. going to the coolers is going to have wild swings in temp. , unusable info for real world.  What you want is usable numbers, so you can compare with other people and compare your temps  in the future for anomalies and long term trends.

good info ,done the installation I went with the test port,went for a test drive and the hotter it got was 165 going up hill after a few hours,temp went up gradual so the test port is a good choice 

I just pulled the factory temp sender, left it taped up in the chassis with factory wires attached and installed the ispro sender in that port on the trans to cooler line at left front od trans.