No. I'm doing the Pin7 mod on my 98LX so I can manually select whether or not to engage the CDL in 4LO. I did notice on another short hill where I engaged 4LO, the trans temps didn't climb as high. Presumably because I could get into 3rd at a lower speed and the engine wasn't having to try as hard due to the gearing help.Are you in low range when the trans gets this hot?
I have 2 big concerns with the trans temps:
1) Towing off-road. Seems that might be mitigated by 4Lo
2) Towing on-road in mountains. Not sure if being in 4Lo (with CDL disengaged) is the best idea or even possible. I would think that since I wouldn't have the CDL engaged, there wouldn't be any additional binding in the drivetrain beyond what would be present in 4Hi. Correct me if I'm wrong, but I think of the transfer case like the 2 front chain rings on a bicycle and the transmission as the 4 speeds on the rear cogset. When you climb steep hills on a bike, you use the smaller front ring. The Torque Lock Converter seems to make the most sense in these cases where I can stay in 4Hi, but lock the converter in 3rd.