Engines heat up faster because things burn inside the engine. You get a lot of heat from burning fuel. Nothing is supposed to be burning inside a transmission.

 

I get that. The engine coolant temp sensor is likely located in the engine coolant path itself...correct? Is the trans temp sensor also located in the transmission fluid path or is it sensing something on the body of the trans itself? If it's in the trans fluid path, I'd think that it could show show a quicker warm-up.

 

The engine sensor is in the coolant path. The trans sensor is in the pan, tied to the solenoid body.

The transmission software needs to know the transmission average temperature, not the hottest temperature.

 

Just for the sake of perspective, what's the hottest you've seen outgoing fluid to the cooler in a transmission that's still operating within the normal temperature range?

 

I've seen a trans that's working at max capacity sending 300+°F fluid to the coolers while keeping the sensor below 250°F.

 

One more question, why does it feel like the transmission shifts twice in 3rd gear?

 

That's probably the torque converter clutch locking up.

 

That is what it feels like to me.

 

I notice this more when I'm towing vs non towing.

Non towing converter locks up for me typically in 4th gear and it changes the RPM so much you would swear it was a gear change...but it's not.

Towing and accelerating in a normal fashion (while in tow/haul mode) it usually locks up in 3rd gear.

Nothing is wrong with the tranny...all if functioning normally.