Your post title says "replaced TB". Did you buy new? used? did you re-use old seals?

I think a TB adaptation reset would be necessary in your situation. Might be your solution.

 

I bought used and used the old seal.

 

The PCV on these hisses, even when new or when otherwise working properly. It’s a common mistake to assume it’s failed when you hear it hissing.

The crude way to test a PCV system is known as the “glove test.” You remove the oil fill cap and, with the engine running, place a surgical glove over the opening. The glove should lightly pull into the oil fill tube. If the glove inflates, the PCV system has failed somewhere —clogged hose or failed valve (the UFO thing). The proper way to test PCV uses a manometer to accurately measure vacuum.

 

Maybe I missed this, but for what reason did you replace the throttle body? In any case, since you did, you need to reset fuel adaptations, which does a relearn on the TB. The MAF should also be a Denso. General experience is that any others don't work well in the LR3.

 

I replaced the TB because I felt like I had tried all other options. Since it had no effect, I’m going to put the old one back in. Might it help to reset settings or check them anyways with the old throttle body?

The stalling happens intermittently, if that helps determine what to check or replace next. Again, once I cleaned the system the truck ran great for half a day.

 

Yeah, even if you put the old one back you should reset adaptations.
There are often hard to find vacuum leaks with the LR3, commonly somewhere in the air intake system. I'd recommend a smoke machine using pressure for a true test...