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-   -   1996 transmission temp sensor and gauge install (https://www.toyota-4runner.org/3rd-gen-t4rs/248013-1996-transmission-temp-sensor-gauge-install.html)

Dezerts10 12-10-2017 12:26 PM
1996 transmission temp sensor and gauge install
 
After searching and not really finding anything except the trans temp light goes on at 300 degrees and of it ever goes on you’re basically to late I think I want to put a trans temp sensor and gauge in my 4Runner

Where would the best place to put it be? Crawling under it the lines to the cooler have fittings I think I could adapt a sending unit to but what line is the line that would tell me the most accurate temp of the atf? Or is it better to put measure temp off the fluid in the pan?


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aontkos 12-10-2017 12:35 PM
Quote:
Originally Posted by Dezerts10 (Post 2861336)
Where would the best place to put it be? Crawling under it the lines to the cooler have fittings I think I could adapt a sending unit to but what line is the line that would tell me the most accurate temp of the atf? Or is it better to put measure temp off the fluid in the pan?
I think it would be a lot easier to put it on one of the cooler lines instead of in the pan. That's what most folks tend to do.

Personally, I would put it on the line that has fluid being sent TO the cooler. This will tell you what temperature the fluid is in the transmission, rather than what it is after it passes through the cooler.

Dezerts10 12-10-2017 01:08 PM
Which line is to the cooler though? I think that’s the best place as well I just don’t know which line is which


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LittleCaesar 12-10-2017 01:26 PM
http://www.toyota-4runner.org/3rd-ge...emp-gauge.html

19963.4lsr5 12-10-2017 03:13 PM
https://uploads.tapatalk-cdn.com/201...7f69b516da.jpg

Here is where a member mounted his in the pan.


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Black798 12-10-2017 03:37 PM
That picture is of my pan, I installed the sensor at the same time I did the shift kit and had the pan off anyway.

You can read plenty of articles debating the best place to mount the sensor. Personally, I chose the pan because that is where the bulk of the fluid id and it's sustained high temperatures that kill the fluid not the momentary peaks when the fluid is exiting the trans and heading to the cooler.
I wanted to see the average temps so I choose the pan and also have an inline temp switch that kicks the cooler fan on at 185 so if the cooler starts not keeping up the fan will come on. With this setup, I have never seen the temperature in the pan go over 190.

Dezerts10 12-10-2017 05:36 PM
@LittleCaesar thanks for the link.

I wouldn’t mind putting it in the pan, just not to inclined to pull it at the moment just to do it.

Which line is the tranny to cooler line? If I do this I’ll probably tap into that line for simplicity at first


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theesotericone 12-10-2017 06:51 PM
Quote:
Originally Posted by Dezerts10 (Post 2861510)
@LittleCaesar thanks for the link.

I wouldn’t mind putting it in the pan, just not to inclined to pull it at the moment just to do it.

Which line is the tranny to cooler line?
Passenger side is supply, drivers side is return when it's hooked to the factory rad. So the longer rubber line in your case would be return and the shorter line supply.

I added my cooler in series with the rad and put the trans temp probe on the supply line with a bronze tee. Easiest way and it's close enough to what the actual pan temp is for me not to care to do it another way.


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