Missing Transmission cooler.

That is true, but the transmission itself also has a thermostat that doesn’t open up until the transmission fluid is close to the same operating temperature as the engine coolant. So, the radiator cooler really isn’t acting as a warmer, unless of course using a pin to hold the transmission thermostat open.

 

Just to add to this. You also need a quart of ATF because you have make up for the difference due to the new cooler. When i did mine we used about 3/4 of the quart for my cooler.

 

Gotcha, I think I may get a scangauge before I start all of this.

 

A scan gauge is a fantastic start . you will be monitoring a lot more than transmission temps with that gauge .
I would also add a 4490 True cool at minimum to your truck or perhaps bigger and be done .
https://www.tacomaworld.com/threads/transmission-coolers.526283/

 

Wow did someone find the OP's trans cooler yet? 36 pages and going strong.

 

Thank you for the advice GC, should I get a fan also?

 

I cant answer this without knowing exact details about where you live and how you plan to tow .
There are many variables that come into play for the use of a fan .
Here is the best info that may help you decide .
https://www.tacomaworld.com/threads/3rd-gen-transmission-cooler-upgrade.482280/#post-14723804

 

Yes, Toyota indicated which fan/clutch you have by a color on the neck, use to be green and orange. not sure what the current colors are. orange was towing package, different clutch.

 

some of my previous vehicles had engine oil coolers and they looked nothing like a normal radiator since they are liquid to liquid cooling.

 

Definitely! I would also add that you can use any type of locking pliers, aka vice grips, to pinch all rubber lines to keep fluid from running out of them. A catch like a old coffee can, or milk jug or whatever too to catch whatever comes out of the radiator ATF cooler.

 

Thanks, I will study up. I will only be towing around two thousand lbs. but I live in Oklahoma and tow in Colorado and South Dakota. It gets really hot here in July and August.

 

Also, I was wondering what version of the App I had because when I start it up it just says Torque. When I traced it back to the Play Store it says Pro so obviously I paid for this version.

 

Good point! That's what I did.

 

Have you towed this trailer up north already behind the taco? I flat tow my 3,000lb Samurai and I am tuned with 5.29s and it’s not exactly pleasant (but not awful either). I can’t imagine towing 5,000+ lbs up there on stock gears. If you plan to tow they thing on a regular basis I would either consider regearing ASAP or just trading the taco in for a full size.

 

Not yet. I picked it up about a month ago. Have hauled it locally twice now. No issues with how it hauled. Just the usual crap gas mileage. On flat road it didn't go over 2800 rpm. As long as I can keep the tranny happy, it should be fine.
I'm used to towing large horse trailers fully loaded. The weight behind me doesn't bother me as long as I have good brakes.

 

This is what a lot of 2nd Gen GX owners have been doing.... adding the OEM aux air cooler to the models in the USA since it didn't start coming with it from the factory until the 2020 model year with the available offroad package for the GX.
https://www.clublexus.com/forums/gx-2nd-gen-2010-present/919173-oem-at-cooler-install.html

 

One more question for ya @Jeff Lange , did the mpg numbers change for 2020?

 

This thread,



For the other medics. I used to cringe when the crew I was relieving said "You don't have to bother checking the truck, it's perfect." Whereupon I'd run out and check the truck. One time I found 5 of 8 lug nuts missing. Two studs were broken off. WTF happened, I never found out.

 

I don't have that information, sorry.

Jeff

 

Only reason I ask is because I was watching a video on aisin transmissions and they were talking about the fluid warmer on the side of the housing. Apparently more and more mfgs are keeping the oil hotter to Reduce frictional losses and eek out more mpg. I was curious if there was any correlation. Thanks anyway