wonknose

So it should be about 650rpm cold? Mine is about that when warm, but seems very high before warming up.

On mine the idle is pretty fast when cold and causes the car to really pull when put in reverse-- was following this link to see if anyone else knows how to bring the "cold" idle down.

95-97 have the same engine as 90-94 LS, just a lil extra power, but no vvti

Dang this is bugging me -- my mechanic has a book that says my 1992 LS400 is an interference motor but I read everywhere the 90-94 (and above 90-97) are non-interference motors.

If it is truly a non-interference engine (1uz) in my 1992 then I will probably just drive it till it or the water pump goes before replacing it. No problems there other than being stranded for a bit right? I really don't know why I am posting this rather than for warm fuzzies as I have read many people posting the same question and receiving the same answer.

This is my first Lexus and I picked up a pretty worn out 1992 LS400 for $3.4k and will be attempting to bring it back into decent shape with my very rusty back-yard mechanic skill set which began with my first car, a 1959 Morris Minor which had something new broken or needing attention nearly every day. From what I read the LS400 has a reliability rating orders of magnitude better.

I picked the LS400 for its comfort, reputation of reliability and because I've always loved V8s. :)

I am answering my own question. Replacing battery in remote key 92 LS400:

Use a mini philips and remove single screw. With mini flat screwdriver evenly pry open all around key handle so it pops open and doesn't break.

Bend back small metal clamp just enough to remove battery. Replace with a Lithium CR1220 available at RadioShack for $2.99 + tax. Put it back together and your key is good for several more years.

The original Battery is a Panasonic 3V # BR1216 But this is not in replacement catalogs, so maybe Lexus has an exclusive on it so they can help themselves to your wallet.

The Lithium CR1220 is identical in every way, but does not list the BR1216 as a replacement.

It took me ten minutes and I now have a fresh remote key.

Thanks! I was trying to do the same thing but not as brave as you ;)