That's what I did, works great.

(It's called the Pressure Test Port I believe, up high towards the back of the tranny on the passenger side. Takes less than 3 minutes to install the probe in there, easy to remove and put back to stock if you think your dealer is going to give you warranty crap about drilling your pan or replacing your cooling lines.)

 

buy a bullydog with outlook and plug it in

 

What is everyones tranny temps running? like around town driving.. mine usually is somewhere between 125-175 i would say...

 

I agree with ib516 take the time to do it right . www.mcmaster.com This is were I got mt T-fitting part #5929k146. Not really that much of a job. Buy an extra quart of at fluid before you start. I bought my gauges from Diesel Manor & they are by far some of the best people you will ever deal with.

 

This argument is just like a "where to place EGT" argument.

Who cares WHERE your trans temp probe is placed, as long as you know what the temps are supposed to be at that location? If i know what my temps are supposed to be in my pan, then i can use my probe effectively. If i had it in the cooler line i would use those temps effectively.

 

ib516,

You are 100% correct we need to place it in the line to the cooler. I've had several rebuilder tell me the same thing and yet I see so many who think its BS and still put it in the trans pan.

 

Wrong place again.

No fluid flow because this is a dead end, its a pressure TEST port not a temp port.

Slow to react to temp changes, not a true reading of fluid temps, and will exhibit heat soak conditions once it is warmed up.

The ONLY place to put the probe to monitor max fluid temps generated in the TC is in the front cooler line before it gets to the fluid-to-fluid cooler.

An incorrect install is a waste of the money spent on the gauge and the time spent installing it. It is then just a pretty geegaw that lights up and the needle moves., kind of like a bobble head.

 

Once I feel the trans is good and warmed up, most of the time I'll see 135*F to 142*F during winter months and the summer maybe 148*F to 150*F with my X-Monitor, this is around town and on the hwy unloaded. I have always questioned the temps on the X-Monitor because the lead is spliced into the factory wire temperture probe line I believe and the way I understand it. I did not do the install myself. The highest temp I have ever seen on my X-Monitor (and it does record max temp readings for the one's that didn't know that) is 161*F and that was pulling a 28ft Travel Trailer in August with outside temps at 97*F. I knew for sure then that could not be right,I have gotton into the habit of adding 20 or 30 degrees to what ever the temp is showing on the X at the time. I don't know if this is correct procedure or not I would like it to be as accuate as possilbe so I don't have to do the math. So here we are cooling line or in the pan I'm throughly confused again.

Tony

 

All this time I've been planning on putting my probe in the pan. In the threaded hole in the Mag Hi-Tech pan. But I'm reconsidering. If you never want to have the oil temp go higher than a certain point, say 275* or so, then the only way to be sure it doesn't is if you monitor the temp of the oil as it leaves the tranny on the way to the cooler. The hottest oil you can get access to. By measuring it once it gets back to the pan and after it gets diluted with the cooler oil there, you really have no way of knowing what the highest temp was. So if you are driving up a long grade, unlocked, and the heat starts to come up, you can stop and let things cool off before burning the oil. Whereas, in the pan, the burned oil will mix with the cooler oil and you might never know. It's not so much All the oil getting to a dangerous temp, as it is ANY of the oil getting to a dangerous temp.

So, you guys with probes in the cooler line: How high do your temps get and how quick do they get there. Have you ever had to stop and cool off?


Wetspirit

 

I disagree. While it may not be the best spot, it does reflect pretty accurate temps. I have compared to those that run in the pan and in the lines. I only did it on a temporary basis, but it is not then end of the world. The only problem is that it does not get fluid in reverse.

 

It reflects transmission temp, not fluid temp, same as the pan. Big difference, as much as 100 degrees, between the two.

The bulk of the heat is generated from the fluid shear in the TC. This is what needs to be monitored.