Aux Transmission Cooler

The cooler has 10an fittings on top. This is a 10an to 3/8 barb fitting.

Will def look into this, thanks!

 

Hard to tell the exact temp with the toyota gauge but it normally sits at half. climbed to 5/8 - 3/4 before i put in in 4wd low and went back down. but 4wd low is too slow and torq'y for how i drive and the roads we have. it needs it if you dont drive like grandma....

 

ok i believe you its a thing now lol. but remember. the trucks with trans cooler cool off the engine coolant.. which at operating temp can be 215ish degrees. so anything below that is "ok" most manufactures have been doing it that way for years so it must be ok.
so from the 4gn forum it seems as long as you keep engine reved little higher all is well. prolly why TFL did not have trouble towing max load on road.

 

Do your homework and measure the space in front of the condenser, then install the biggest external transmission fluid cooler that will fit. The stacked-plate design is a good choice: more surface area exposed to the air-flow and decent durability.

I think of it this way: The transmission on my truck went 104,000 and didn't blow up because of the heat with only the tow-package external cooler, and the factory one installed in the radiator tank upstream. I added a larger one when I got it. I don't tow very often but it's peace-of-mind having it. I had a drain-and fill done soon after and will do another one at 160,000 miles if I live that long.

 

I'm doing it.

Don't want to mount in fron of the FMIC

 

What's an "FMIC"?

 

The front mounted intercooler

Keeps charged air cool and your engine happy.

 

Got it. Tnx! I could use one of those.... lol

 

I have a Scangauge that monitors the transmission temp. The hottest I've seen it in normal use is 210F. It stays between 197-205 mostly in 99% of driving. I don't recall the PID you use to pull the transmission temp, but there's two temp sensors in the transmission. Both were consistently within 2 degrees of each other. So I just picked one of the values since I didn't know which spot was measuring where. The easiest way to figure out the true temp would be to display both temp codes, and then put the truck into the transmission fluid change mode using the gear shift and watch when the D on Drive starts flashing to indicate the 115F temp or whatever the fluid check temp spot is.

 

If you can post the PIDs I'd be eternally grateful! I found one app to pull the pan temps but I would prefer Torque or OBD Fusion

 

Here's what I'm using for the Scangauge. There's also a post of mine prior in that thread that has torque converter lockup status (on or off) if that's of interest.

https://www.tacomaworld.com/threads/4th-gen-scanguage-trans-temps.851306/#post-30415582

 

Yeah, unfortunately I dont know how to translate that to PID for the OBD apps.