I didn't find any threads on TB removal DIY though plenty of TB cleaning. I'm expecting a TB replacement tomorrow and was just wondering how hard is it to take out the TB. The intake obviously needs to be removed but from you experienced GS drivers, is this something a noobie could do in 30 degree temp? (might need to park car inside garage to do this from the cold)

 

http://bananags.grantham-internation...oolant_bypass/

 

Here is a video on changing the spark plugs on a 2jz-ge engine. But, since you have to remove the TB to get to the plugs it has a pretty good description of how to remove the TB. The guy is Russian and makes a couple of mistakes with the names of certain parts but don't let that deter you.

 

Sorry, I just noticed that you were asking for instructions on a 1uz engine and not a 2jz. Sorry for the misinformation.

 

Just did this this weekend. Pretty straight forward...

https://www.clublexus.com/forums/gs-...and-gs430.html

 

It is actually really easy to do. Intake piping, the three electrical plugs, four bolts that are very easy to get to,two coolant lines and it's off. A tb swap can be done in less than 45 minutes. I did mine last weekend.