Hi Ajahearn,
Have a question on another topic. I have a 1996 Lexus LS400 with 96000 km that has an initial idle speed of 1600 rpm.
Did you ever have a high idle speed at startup, then comes down in about 4 minutes as soon as the coolant warms up.
Also what is the idle speed when you start the engine first time of the day.
Thanks
Fred