LarryJM wrote:
RLS7201 wrote:
The best way to monitor transmission temperature is the fluid line leaving the transmission. Which comes from the torque converter. That way you see the hottest fluid.
On your E4OD that is the front line on the right side.Picture of sensor in hot line.
Richard
I DISAGREE, the temp out of the TQ can vary WILDLY and is really not useful as a single value variable. There are no standards to my knowledge for that temp to compare temps to for monitoring. The important temp is what the actual tranny is operating at which is the sump temp and the test port the OP is talking about is a common place to measure that temp.
Larry
But the life of the transmission fluid is determined by time at the highest temperature. Which you won't see in the test port or pan.
Yes testing the temperature of the fluid right out of the torque converter will vary when the torque converter clutch is unlocked but when the clutch is locked the temperature will be stable.
See
temperature chart ver mileage.Richard
