Installed EGT, Trans Temp and Boost gauge today. Took the truck for a short 15 minute test drive. boost and EGT came up right away, Trans temp did not seem to move? Starts at 100 degrees. It was cool out about 45 degrees. I have a 1999 F250 7.3. I installed a 6.0 cooler two weeks ago. But would be interested in learning how long it takes others to get trans temp up.

 

is it in the trans test port? if so ive never seen mine go higher then 160F in that port.. not sure how good that port is for a sending unit really.

 

Yes it is... I was wondering how long it takes to move? Guess I will find out tomorrow when I drive it a little longer..

 

In my opinion that port is the best place you can put your sender.

The transmission takes a lot longer than the engine to warm up. It will take even longer with a 6.0L cooler. On a 45°F day it can take over 10 miles to hit 100°F.

 

Mark,
I have been monitoring my trans temps with an Autometer trans temp gauge with sender in the test port. I also have an Aeroforce Interceptor gauge monitoring the TFT sensor. I see about 20* warmer temps at the TFT sensor. Would the location of the sensor cause this much difference? I am going to switch out my Autometer gauge for the Interceptor later in my gauge pod. I have temporarily mounted the Interceptor under my brake controller until I have gotten used to the trans temp reading and what is considered "normal". I have the annunciator set to alert me if the trans temp goes too high.

 

With that outside temp i can almost make it to work(25 minute,16 mile drive) before it starts to move. When i installed mine i didn't think it worked on my 10 minute test drive.

 

i to also just did these mods and i took a 60 mile drive yesterday and only saw about 130 on my trans temp it just takes a long time to warm up.

 

15 miles into town, run around town for 30 minutes then 15 minutes back. No freeway speeds, outside temp in the upper 40's and the trans temp needed if it moved at all would have been a needle width off of 100. So, either it isnt working or it's too cold out or my new 6.0 cooler is working really good.

 

Yes, it can. I've seen it cooler at times, but usually the sensor on the solenoid body is 10-20°F warmer than the port.

 

Thanks for the info, Mark. I was starting to doubt the accuracy of my gauges. This puts my mind more at ease when I swap out the gauges.

 

Does anybody have a pic of the trans test port? Im not sure I have mine hooked in the right place. I never see mine get above 130, even in the HOT summer days in SC. I have mine hooked to the drivers side of the trans, not sure if its the trans test port.

 

Here you go --> 3-Gauge Install Pictures

 

This fall, I installed a trans temp gauge in the test port and I haven't seen that needle move either. I tow quite a bit and am pretty confident that the trans temp has gone above 100*. The ISSPRO EV2 boost and EGT gauges that I installed at the same time work well. I'm getting power for the lights at all the gauges and my dimmer works.

I have been meaning to pull the trans temp gauge pod to make sure that I've got a good connection for the temp sensor. I was planning on using a multimeter to confirm that I have connectivity between the gauge plug and the plug at the sensor.

Beyond that, what else can I, and the OP, check to confirm that the sensor is good and working?

 

A simple check, Warm up a pot of boiling water and your wifes temperature gauge. Then dip the sensor in the water. Compare the difference between your wife's and the trucks gauge. May have to run a temporary ground wire to the sensor depending on what sensor you have.

 

Make sure you don't teflon tape the sensor if it is a single wire unit. That is how it completes it's circuit.