[Dnaudio]

Has there been anyone to install a transmission temp sending unit on the nag1 transmissions? I've tried to look a couple times on here as well as on the lx forums but it's kinda hard to find because there are so many thread on measuring the fluid level.

I'm looking because I wanted a cheap way to check my trans temp so i make sure it's up to temp before accelerating too hard.

Thanks guys

 

[Ddaddy]

Has there been anyone to install a transmission temp sending unit on the nag1 transmissions? I've tried to look a couple times on here as well as on the lx forums but it's kinda hard to find because there are so many thread on measuring the fluid level.

I'm looking because I wanted a cheap way to check my trans temp so i make sure it's up to temp before accelerating too hard.

Thanks guys

You don't need to worry about the tranny temp. As long as the engine is up to temp then the tranny will be fine. It exchanges heat with the engine.

Also, with a 3.5L, you are never going to stress the Nag 1 tranny.

 

[Dnaudio]

i'm installing a supercharger soon, i know it's not needed but i'm for knowing whats going on.

 

[Ddaddy]

i'm installing a supercharger soon, i know it's not needed but i'm for knowing whats going on.

Even with a Supercharger, you won't be stressing the NAG1 with a 3.5L engine. Also the issue with tranny temp is being too hot, not being up to temp.

Either way, if you really want a gauge, check these out. They are complete kits.

http://www.carid.com/auto-meter/auto-meter-transmission-temperature-gauge-12635053.html

 

[Dnaudio]

I just wanted to know where people commonly install the temp sensor on the nag1's. It's nice in the winter. Once temps dip below 0 my transmission likes to hold gears.

 

[Ddaddy]

I just wanted to know where people commonly install the temp sensor on the nag1's. It's nice in the winter. Once temps dip below 0 my transmission likes to hold gears.

The tranny is designed to hold gears when cold to warm up the fluid. It's controlled by the TCM.

Not many folks bother with a tranny temp sensor so there's not a big database to draw from. Those that do install them generally seem to put the sensor in the side of the trans pan. I have seen one or two that rigged it to go down into the dipstick tube.

 

[Yuro]

I thought the Tranzformer kit did this along with a few other things?

 

[djalbin]

I don't know if any of this applies to aftermarket gauges but the newer Chargers with NAG1 (2012 R/T in my case) can display the transmission temp on the EVIC screens. The sensor is internal to the transmission but the signal is sent through the Park/Neutral switch.


Info from the Charger Service Guide:


The Electrohydraulic Control Unit Assembly of the NAG1 transmission contains a temperature sensor to monitor the transmission oil temperature. This sensor is wired in series with the transmission Park/Neutral switch.


The transmission oil temperature sensor is located in the shell of the electric valve control unit and is fixed to the conductor tracks. Its purpose is to measure the temperature of the transmission oil and pass the temperature to the TCM as an input signal. It is a temperature-dependent
resistor.


The transmission oil temperature sensor is switched in series with the park/neutral contact. The temperature signal is transferred to the TCM only when the dry-reed contact of the park/neutral contact is closed in REVERSE or a forward gear position.


The Transmission Temperature Sensor Specifications table identifies the relationship between transmission temperature and sensor voltage.

 

[Dnaudio]

If other people are interested i can try to figure out how to tap that sensor, but noone probably cares so i'l focus my attention to other things for now. I appreciate the help guys, good info. I was hoping someone had found a port somewhere that you could use to put a temp sensor since i really would prefer not to use a hole in the pan.