Not unusual for locked up and running down the road. The only heat generated at that point is the trans working and what the cooler/warmer is doing.

If you want to see the difference take the same 2 trucks and loads down the Vegas Strip in the middle of Jully in traffic and watch your temps.

I GUARANTEE there will be a HUGE difference in your readings.

 

Why do two trucks.

Why not 1 truck 2 gauges like I did. Loaded on a 90+ day in michigan haulin 15k load.

Both autometer gauges. One was my buddy's borrowed and mine. Installed in the rear test port on passenger side and the other in my fancy dancy pressure line. Buddy didn't want to buy the hose I got suckered into buying.

BOTH...LET ME REPEAT THIS FOR THE BACK OF THE ROOM....BOTH WERE IDENTICAL DURING THE ENTIRE DAY 450MILE TRIP.

Doesn't matter how many times this is posted, I always laugh at the amount of e-web experts that KNOW when they probably haven't even done a test to prove it.

 

LMAO!!!

Its like putting lipstick on a pig, utterly futile trying to explain the obvious.

Way to be totally oblivious, miss the whole point, and insult everybody that KNOWS your blowing smoke.


I have PERSONALLY seen temps between pan and hot line within 10 degrees, AND, the differences better the 100 degrees, DEPENDING ON DRIVING CONDITIONS!


So much for YOUR e-web expertise. Why don't you do a fair test then report the findings instead of this drivel.

 

A completely fair test would be in wind tunnel environment.

There are basically two tests that can be used.

Static testing materials: Truck, Gauge, Sensor, Load if used
Variables: Temp, wind resistance, estimate of warm or cold test truck

Running two different tests with the sensor located in either position leaves room for the variables above in the same day. Running two different trucks leaves many more variables open to argue and taint the test results.

Running 1 truck with 2 gauges and 2 sensors limits the variables down to a difference in the measuring gauges and location. Thus limiting down the variables as much as possible.

As for running a fair test...I think I have shown that my test does leave room for error but "should" show the difference in the location of the sensor. The margin of error should be somewhat handled by Autometer's quality control department to ensure THEIR products are produced to measure with a certain error margin (within spec).

So I'm trying to figure out sparky...Exactly what else have you SEEN...Cause on the e-thug web, I have SEEN pigs fly and it aint pretty.

Though I have tested and posted on TDR about my test results a few years back. I've also produced test results for various static and dynamic cooling solutions in the jeep market, as well as worked on fuel systems. Worked closely with Roush Racing on a few design related issues in air flow dynamics. And you do ?

But in the end, you can do as you like. I have the hose with the sensor bung. I bought and installed it ONLY to test out the claimed "huge" differences in temps. Variance of only a few degrees is not worth spending 10,20,50,75 or even $100 on a hose. If the variance was 10-20 degrees difference, then I would agree. 2-4 degrees isn't worth the money.

 

Well, I never get into these web arguments, but I do build transmissions and I know a little, but I am not an expert at anything. I will garuntee you that as already pointed out, cruising or during lockup you are probably right, but I know there is know way you are getting the same readings from a port as the output line if you are pulling away from a redlight, or backing up a trailer. I ran the test port for many miles and know my gauge moves almost as much as a dang pyrometer, but you can keep laughing.

I can see a 30-40 degree ramp in temps while pulling away from a redlight under heavy throtlle now and never and I mean never, did my gauge do anything like that in the port.

Oh and the 60-68 or however much those lines are is not the only way. Look at the di4esel manor line. I bought fittings to duplicate what they did for 15.00 at lowes the other day. Already have over 200 miles on it and not a drop of fluid has leaked. For 15.00 I want to know the temps at its hottest.

 

You are way over complicating the whole problem. Try applying the KISS principal here and use the East Gate of Yellowstone in July as a variable. A little experience will show 20 mph up a winding 8% grade is worlds away from the flatland towing you use for an example

Let me state a FACT that seems to be missed at every turn:

+90% OF THE HEAT GENERATED IN A TRANSMISSION OCCURS IN THE TC WHILE IN FLUID COULPING

further,

FLUID FLOW IS FROM THE CONVERTER TO THE COOLER, COOLER TO TRANSMISSION LUBE PASSGES THEN TO THE PAN.


Given these 2 facts would you care to postulate on just how gauge readings in the hot cooler line, pan, and test port could be anywhere near the same given REAL WORLD TESTING CONDITIONS ARE APPLIED?


As for what I've seen, one gauge barely topping 200 degrees with the other is bouncing around 300, IN CONDITIONS WHERE WE USE OUR TRUCKS FREQUENTLY.

As for what I do, I implement high end software solutions for Fortune 100 companies. In my world mistakes are very costly, a whole lot more so than burning a transmission up from wrong gauge placement.

 

I had mine in the test port before making my own "hot line", and I can say one thing for sure. While the temperatures may have been close in both positions, the guage responds MUCH more rapidly than when it was in the test port. That being said, I would rather have as close to "real time" data as possible. By the time the fluid in the test port area raises high enough to cause concern, the damage is already done. Just my .02

 

I make burritos .....does that mean I need the cooler line or test port? hahaha. Ease up fellas, trial and error are a way of life. Respect each others opinions and maybe the pigs wont crap as they fly overhead.

 

I have my probe in the test port, and I think it gives me a pretty good idea on what is happening. It may not react quicker, and it may not be more accurate that using the hot line, but it works for me. I drove many many miles on several trucks I have owned in the past, and not one had a tranny temp gauge. Not one of them had an easy life, and they all lasted well over a 100K with just fluid and filter changes. If you sleep better using the hotline, go for it. The test port has flow except for reverse and park, and let's me know what's happening. The way you guys talk, I don't know how any of the older trucks made it over 100K without guages. This arguement is as bad as the pre or post turbo for egt...ooops...

 

Hello,

So the best place to monitor worst case conditions is the hot line between the TC and cooler.

Damon

 

Industrial equipment monitors oil temp at the converter where the most heat is made. You can get the converter and its oil extremely hot before the tranny even starts to register a temp change.

 

Yes its the best place.