Transmission temp too high

The TC can unlock in 4th. Next time climbing a hill in 4th, watch as the PAN and TC temps start to diverge. RPMs will be 100-200 more when unlocked. I see this all the time when towing in the mountains.

 

Checked ultragauge and it was 225 torque converter, may have been brakes because it was windy going uphill so still had to hit brakes a lot

 

correct, TC an be unlocked in any gear, but will only lock in 4th n 5th if conditions are met. No locking occurs in 1st-3rd.

 

yeah pan temp is really what you wanna be worried about, TC output gets cooled down real quick.

 

Okay I will find the specs to monitor transmission pan

 

Have a Scanguage on my 09 and only am able to get one reading. Scanguage told me its not possible to get both in an 09 only later years. Anyone know which sensor is used in an 09, pan or t/c?

 

Not true. Had both temps displayed for my 05 as well as my 15. These are the parameters I used for my 05 PAN temp:
TDATA:07E021D000
MATCH:210000
TCtrl:92
RPos:0810
RCtrl:10
X:0001 /:0100 +:FFD8
Output format:10 (for F; use 00 for C)
L/R:41

It's been awhile since I did this, so if it does not work do a search on this forum and you will find it.

 

UltraGauge codes for pan and torque readings. UG, and probably SG also, can display a value to show if torque converter is locked.

Courtesy of @07 sport 4x4 , post # 531,
https://www.tacomaworld.com/threads/ultragauge-transmission-temp.318340/page-27