98-00 Ls400 Low Idle

[Celsy99]

I’ve read so many threads on this issue. Below 500rpm in Drive, while warm, with no accessories on. Cleaning throttle body helped the low cold start rpm, but not the warm low idle in drive. Has anyone ever fixed this? Seems to be super common, but most threads I’ve read end without any real solution, other than driving with parking lights or AC on. I don’t want to just start dumping money into parts and service. Any tests or suggestions? Thanks 🙏 

[RX400h]

Have you seen this?
How to Adjust a Low Idle on a Lexus LS 400 | It Still Runs

 

[Celsy99]

I believe that’s only for pre 98 models. There is a throttle cable, but is a drive by wire on these later models. Thank you tho. It’s being serviced soon, and will definitely bring this idea up 

[RX400h]

Please let us know how it turns out and what the solution is. 👍