Where is the darn thing on a 2K LS400? You rinput is appreciated.

 

Wow memory loss. Did you forget you already asked this question yesterday? Search is your freind. This took a couple seconds to find. https://www.clublexus.com/forums/ls4...-in-1-fix.html It's located in Pure Drifter's 1995-2000 FAQ.
I hope you're asking about the "Coolant Temp Sensor" b/c there are 3 coolant sensors. (ECT, gauge, and fans)

 

Yes, I am asking about the coolant temp sensor. And no, I didn't ask this yesterday but I found out my son posted it for me. Thanks for pointing it out. LAstly, I have no idea what the Pure Drifter's is.

 

PureDrifter is a member here with a FAQ section for the 95-2000 LS's. I don't use it b/c mine is a 93 but I figured I would point it out to you. The link I gave you tells ya where it is located. Second paragraph, says it's under the throttle on the passenger side.