Wow!
The depth of knowledge to be found here is incredible! Thank you all. I was so impressed that I just had to sign up right away.
I've owned my 1992 ls400 for 11 years and have had most of the normal probs associated w/ it : bad a/c lcd, leaking p/s pump (never replaced just fill w/trans stop leak once a month), rear diff leaking, and the big one : sputtering, dying, jerking, hi/low rpm out of control engine.
I came across this board for another problem, but had to join in order to share my particular fix for the above prob. Once I did it, it was fixed for good (so far).
What I did was to strip and rewire the wire harness at the left side hinge in the trunk, or boot as our UK friends say.
That's it!
Just wanted to share a cheap fix that worked for me.
Your mileage may vary.
Anyway thanks again to all and hello!