ATF gets too hot
This weekend pulling my camper in my signature with the truck in my signature in 75* weather, my ATF was running 196*-201* at a steady 60 mph. When I got to some side roads the temp went to 207*. Pull...
Forum Discussion
Transmission fluid temps (TFT) of my TV is something that has been of concern to me as well. For awhile now, I have been reading a lot on a couple of diesel truck forums. One thing I learned is that the TFT varies greatly depending on where it is measured, and in this thread this very important factor has not been mentioned:
Is it measured from the OBDII plug in the vehicle (this is where I pull TFT on my truck), and if so, where is the vehicle computer measuring it?
From the transmission fluid pan?
From the hot outlet just before the ATF goes into the transmission cooler?
Where the fluid comes out of the transmission cooler?
From what I have read, one will get widely differing temperatures depending on where it is measured. Some truck owners on some of the diesel forums have more than one gauge and pull TFT in more than one place. FYI, I have read more than once that a larger transmission pan didn't really make much of a difference in TFT.
So throw that important factor into the discussion. If for example, one person measures it at the hot outlet of the trans, and someone else at the outlet of the trans cooler, then we are comparing apples to oranges.
Is it measured from the OBDII plug in the vehicle (this is where I pull TFT on my truck), and if so, where is the vehicle computer measuring it?
From the transmission fluid pan?
From the hot outlet just before the ATF goes into the transmission cooler?
Where the fluid comes out of the transmission cooler?
From what I have read, one will get widely differing temperatures depending on where it is measured. Some truck owners on some of the diesel forums have more than one gauge and pull TFT in more than one place. FYI, I have read more than once that a larger transmission pan didn't really make much of a difference in TFT.
So throw that important factor into the discussion. If for example, one person measures it at the hot outlet of the trans, and someone else at the outlet of the trans cooler, then we are comparing apples to oranges.
