AOD Temperature
Thread Starter
|
Mountain Pass
Joined: Oct 2015
Posts: 215
Likes: 4
From: Buffalo,Tx.
AOD Temperature
Was thinking about adding a transmission temperature gauge.
Any idea where the best place is to put the pick-up?
Not real sure what type pick-up to use yet, guess it depends on where mounted.
Was going to do a separate gauge set with engine vacuum, trans pressure and temp.
Would also like rear end temp, outside air, etc., etc., but gotta stop somewhere!
Any idea where the best place is to put the pick-up?
Not real sure what type pick-up to use yet, guess it depends on where mounted.
Was going to do a separate gauge set with engine vacuum, trans pressure and temp.
Would also like rear end temp, outside air, etc., etc., but gotta stop somewhere!
Post Fiend
Joined: Feb 2008
Posts: 5,831
Likes: 121
From: St Albert, Alberta
Was thinking about adding a transmission temperature gauge.
Any idea where the best place is to put the pick-up?
Not real sure what type pick-up to use yet, guess it depends on where mounted.
Was going to do a separate gauge set with engine vacuum, trans pressure and temp.
Would also like rear end temp, outside air, etc., etc., but gotta stop somewhere!
Any idea where the best place is to put the pick-up?
Not real sure what type pick-up to use yet, guess it depends on where mounted.
Was going to do a separate gauge set with engine vacuum, trans pressure and temp.
Would also like rear end temp, outside air, etc., etc., but gotta stop somewhere!
Trans oil temp sensors go in the pan.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,730
Likes: 2,658
From: SE Florida
I prefer to have the temp sensor in a port in the case. It gives a better idea of the internal temperature of the transmission. A sensor in the pan will always read the coolest temperature in the transmission.
Post Fiend
Joined: Feb 2008
Posts: 5,831
Likes: 121
From: St Albert, Alberta
You cant have in the port in the case you need to have flow around the sensor all the gauges are calibrated temp wise for pan installation.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,730
Likes: 2,658
From: SE Florida
It doesn't need flow. Gauges are not calibrated temp wise for pan installation. Gauges should be calibrated to be accurate in the range of temperatures that they will see.
I used to be an automatic transmission cooling engineer at Ford. I instrumented cars and trucks and tested them under extreme cooling conditions. I usually had 15-25 thermocouples in the pan and one in the test port. I also recorded the temperature the TFT sensor saw.
The test port was always closest to the TFT temperature. The pan temperatures were uniformly quite a bit cooler.
I also saw tests run with clear plastic pans to try to get an idea of fluid movement in the pan. I was surprised by what we saw. There were many places in the pan where the fluid was stagnant. It didn't move around, it just sat there. So if you're reading this fluid you are not getting an accurate transmission temperature.
I used to be an automatic transmission cooling engineer at Ford. I instrumented cars and trucks and tested them under extreme cooling conditions. I usually had 15-25 thermocouples in the pan and one in the test port. I also recorded the temperature the TFT sensor saw.
The test port was always closest to the TFT temperature. The pan temperatures were uniformly quite a bit cooler.
I also saw tests run with clear plastic pans to try to get an idea of fluid movement in the pan. I was surprised by what we saw. There were many places in the pan where the fluid was stagnant. It didn't move around, it just sat there. So if you're reading this fluid you are not getting an accurate transmission temperature.
Post Fiend
Joined: Feb 2008
Posts: 5,831
Likes: 121
From: St Albert, Alberta
It doesn't need flow. Gauges are not calibrated temp wise for pan installation. Gauges should be calibrated to be accurate in the range of temperatures that they will see.
I used to be an automatic transmission cooling engineer at Ford. I instrumented cars and trucks and tested them under extreme cooling conditions. I usually had 15-25 thermocouples in the pan and one in the test port. I also recorded the temperature the TFT sensor saw.
The test port was always closest to the TFT temperature. The pan temperatures were uniformly quite a bit cooler.
I also saw tests run with clear plastic pans to try to get an idea of fluid movement in the pan. I was surprised by what we saw. There were many places in the pan where the fluid was stagnant. It didn't move around, it just sat there. So if you're reading this fluid you are not getting an accurate transmission temperature.
I used to be an automatic transmission cooling engineer at Ford. I instrumented cars and trucks and tested them under extreme cooling conditions. I usually had 15-25 thermocouples in the pan and one in the test port. I also recorded the temperature the TFT sensor saw.
The test port was always closest to the TFT temperature. The pan temperatures were uniformly quite a bit cooler.
I also saw tests run with clear plastic pans to try to get an idea of fluid movement in the pan. I was surprised by what we saw. There were many places in the pan where the fluid was stagnant. It didn't move around, it just sat there. So if you're reading this fluid you are not getting an accurate transmission temperature.
B&M's and Automemters gauge are actually installed in the return line from the cooler.
Yes the true internal temp of the trans will be most accurate from a port of the internal workings.
But it is the temp of the trans fluid we are really concerned about much like the coolant in an engine, many internal parts of a motor are far hotter than 205-210°F of the coolant when at temp. And what is in the pan is what feeds the trans.
Basically none of the after market gauges have a sending unit design for an in port install nor are in temp range to read internal trans temps.
Unless you wanna start fabricating your own thermocouples and your own gauges then you are left with what the after market supplies and they supply in pan or return line kits with gauges set to read the temps seen in those locations.
And given the option of a return line install or pan install I'll take the pan install thank you very much.
http://static.summitracing.com/globa.../bmm-80212.pdf
http://www.autometer.com/media/manual/2650-267X.pdf
Trending Topics
Thread Starter
|
Mountain Pass
Joined: Oct 2015
Posts: 215
Likes: 4
From: Buffalo,Tx.
A pan probe would not be a bad idea.
It would kill two birds with one stone as it would also give you a place to partially drain the pan before removal.
Not sure but, don't think my pan has a drain plug. Will have to check, been awhile.
Thanks everyone for the feedback.
It would kill two birds with one stone as it would also give you a place to partially drain the pan before removal.
Not sure but, don't think my pan has a drain plug. Will have to check, been awhile.
Thanks everyone for the feedback.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,730
Likes: 2,658
From: SE Florida
ALL aftermarket trans temp gauges are calibrated temp range wise for an in pan or return line install.
B&M's and Automemters gauge are actually installed in the return line from the cooler.
Yes the true internal temp of the trans will be most accurate from a port of the internal workings.
But it is the temp of the trans fluid we are really concerned about much like the coolant in an engine, many internal parts of a motor are far hotter than 205-210°F of the coolant when at temp. And what is in the pan is what feeds the trans.
Basically none of the after market gauges have a sending unit design for an in port install nor are in temp range to read internal trans temps.
Unless you wanna start fabricating your own thermocouples and your own gauges then you are left with what the after market supplies and they supply in pan or return line kits with gauges set to read the temps seen in those locations.
And given the option of a return line install or pan install I'll take the pan install thank you very much.
http://static.summitracing.com/globa.../bmm-80212.pdf
http://www.autometer.com/media/manual/2650-267X.pdf
B&M's and Automemters gauge are actually installed in the return line from the cooler.
Yes the true internal temp of the trans will be most accurate from a port of the internal workings.
But it is the temp of the trans fluid we are really concerned about much like the coolant in an engine, many internal parts of a motor are far hotter than 205-210°F of the coolant when at temp. And what is in the pan is what feeds the trans.
Basically none of the after market gauges have a sending unit design for an in port install nor are in temp range to read internal trans temps.
Unless you wanna start fabricating your own thermocouples and your own gauges then you are left with what the after market supplies and they supply in pan or return line kits with gauges set to read the temps seen in those locations.
And given the option of a return line install or pan install I'll take the pan install thank you very much.
http://static.summitracing.com/globa.../bmm-80212.pdf
http://www.autometer.com/media/manual/2650-267X.pdf
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,730
Likes: 2,658
From: SE Florida
I think the test port on the side of the transmission is the best place to put the probe.
If you want to put the probe in a pan, any spot works about as good as another. There is no optimal spot in the pan. None of them are good.
If you want to put the probe in a pan, any spot works about as good as another. There is no optimal spot in the pan. None of them are good.
Thread
Thread Starter
Forum
Replies
Last Post
justcruzin125
1987 - 1996 F150 & Larger F-Series Trucks
18
Sep 21, 2016 08:14 PM
e1p1
Clutch, Transmission, Differential, Axle & Transfer Case
5
May 14, 2008 12:49 AM
fp_5
Clutch, Transmission, Differential, Axle & Transfer Case
3
Sep 7, 2005 07:49 AM
madmax99
Clutch, Transmission, Differential, Axle & Transfer Case
4
Sep 13, 2004 08:06 PM