Hi gang, was curious to know...what is the normal rpm range for your rx350? I just cleaned out the throttle body and maf sensor as well as change my engine filter.
after a short drive it now idles around 500rpm. Is this good or a little low?
i can "feel" the engine idling at this rpm.

 

The '14 and '08 we have both idle a little under 700 rpm fully warmed up. Mine was idling as low as 400 and almost stalled out after I did the full clean-up like you. It cleared up after I disconnected the negative terminal, which reset the ECU.

 

Max. Actually i did the reset after I cleaned out the parts (battery disconnect).

 

Maybe a bit of an “Italian tune-up” should clear it up. I remember some massive smoke clouds coming after the TB cleaning after some WOT pulls, the car would run wonky but got progressively better

 

Matt, yes i think i need to drive it a bit more. Thanks

 

The Italian Tune up is what I been doing lately since I don't drive the car more than 20 miles a week on average and almost never over 50 mph.

I notice if I stomp on it a few times rev it and out to 5k rpms the car feels more responsive and idles better.
Disclaimer, I only do this when engine is warmed up. lol

Same with my AC, if I don't run it a couple times a week when I drive if only jst for a few mins it seems over time my expansion valve wants to stick.