coming to a short pause in drive after towing a load down the highway for a good period of time.

 

Maybe because the line pressure dropped under light throttle? my first thought.....not pushing the fluid through the cooler as fast.

 

Head, I think your "spike" (although I wouldn't characterize 180 as a "spike") is simply due to pumping hotter fluid into the pan when stopped. It's not cooling very well when not moving air across the cooler. You are probably fine.

Stacked OTOH, running 250 constant even at the hot line is too high. You are slowly cooking the fluid. Seems odd too because it should be moving more fluid/faster with the Transgo kit. I'll bet something is causing a loss of flow through your coolant circuit.

 

yeah i dont know whats up. i dont think its my gauge because it will go down some if i park it for a while but when i start driving it slowly gets up to 250 and stays there pretty much all the time.m yall have any ideas.

 

Torque converter on the way out - running super hot all the time? Dunno...

 

Exactly what was said earlier, the pump is turning slower, and no airflow across the cooler. Also, the fluid remains in the engine coolant filled "cooler" (really a "warmer") and is able to absorb that heat as well.
That is why I use a cooler with a fan. No matter what my speed, I still have airflow over the Cooler.

I toyed with the idea of a seperate, redundant, cooler system with an electric pump when I was putting my truck together (just pumping from the pan, through a cooler, a filter, and back into the pan), however, I see no need at this point.

 

Not trying to get everybody's hair up again but here's a recent observation.

I made several runs over the weekend hauling hay. Same route, same weather, same load (about 10,000lbs).

On one run I forgot to turn off the OD. On one long hill (long for KY ) the tranny temp at the hot line, just out of the tranny (cutoff switch site), rose an extra 50*. I was monitoring the gauge, saw the spike and was alerted to the "problem". In this case, operator error .

 

I just had my guage installed where is this location? This is as recommended bydieselmanor, where I purchaced the guages.

It says in the cooler line, but also says it allows for hot fluid to flow around it????? I'm confused
http://dieselmanor.com/diy/CMS3-gauge/G3image6.htm


And where is this( pretty sure its the pan??? Test port, I believe this is where mine was mounted, it this like the average temp?
http://dieselmanor.com/diy/CMS3-gauge/G3image7.htm

Thanks again for the input.

 

Some people install it in the hot line out, that is the front tube on the transmission. And some install it in the pan. There will be an arguement over which one is better...

As far as installing it in a test port I would not. If you look into this you will find that there is stagnent oil at these locations depending on the stage of operation or only oil in certain circuits during various stages of operation.

The factory puts the oil temp switches in the hot line. As previously stated here, the temp at which they cut-out is questionable but it's in that line for a very good reason. To detect oil at it's highest temperature.

 

Thats for a 3rd Gen - I don't have a clue about anything newer than 1993!

 

I got mine really hot the other day. I was pulling my camper up the mountain at 60-65 in OD and my gauge was reading a constant 180+ degrees. My coolant temperature was really hot too, almost on the far right of the gauge. I was like I wasn't watching my gauges.

I kicked it out of OD and things cooled off.

 

Agree 100%.
Average pan temp will only alert you to a problem long after damage is done.... and it give no indications of shortened useful life of ATF.

RJ