462HO

This car has 73000 miles on it and when started cold, it idles at 1700 or so rpms. After a few minutes, it works its way down to about 1000 rpms. In gear (automatic) its at about 800 rpm.
What is the likely cause of this? I checked for vacuum leaks by inspecting hoses, and found nothing.
Any input is appreciated.

Ariyanna

That is normal my 1996 ES300 does and so did my 92 ES300 before it got totaled thats the way the engine is designed to idle high before it warms up and the it idles normal after it warms up.

462HO

Are you sure its supposed to be that high? Ideling at 800-900 seems too high. It seeems to stress the transmission every time you shift it in and out of gear.
Thanks

Lexmex

crankin, how long has your vehicle been doing this?

When this kind of issue happens to me, I usually disconnect the negative battery cable for a bit (works better than the EFI fuse trick I talk about in the RX300 forum) to get things back to normal. If not, something else is at play.

happy_es3

my car's a 2000 90000 KILOMETERS and it does the same i believe its just to warm the car up

92ES5sp

Anything under 2000 RPM is fine when starting cold. Theyre supposed to do that. It just does thattohelplighting off the cat and getting the 02 sensors online quickly. A vacuum leak will make the idle rough or bounce up and down. Spec is 750 RPM w/ an automatic.

462HO

It's been doing it since we bought it 3 weeks ago. What concerns me most is the shock that it puts on transmission components when shifted in and out of gear.
What does the battery disconnect trick do?

92ES5sp

^ Check your engine mounts. The disconnecting of the battery wont do anything. Its supposed to idle the way it does I promise.

toddpa332

I am on my 3 rd lexus and they have always idled high when first started.

Rollin'ES3

i have a 2000 ES as well, this morning I turned it on and the highest idle i got was 1300rpm....Dont know why yours is so high.

Though I don't think 300 rpms higher is a big deal...

Have you recently serviced the car?

Lexmex

The battery disconnect will reset so to speak the ECM. It adjusts to the way you drive and I have used it to set abnormally high idles I get occasionally. Now 92ES5p does have a point that if everything else is normal, not much of anything will change if you do this. This can also reset check engine lights (temporarily, because if something is really wrong CEL will come back on).

The key thing is that as long as when you driving and are at a stoplight or idle in D, your RPMS should be at least under 1000 RPM, preferably around 750.

BTW, I am also a Floridian

VicsIS350

Question friends I cleaned the TB that air control thingy my RPM seems to high. I put about 20 miles on it by now does it return to proper setting on its own? Throttle is computer controlled right? It idles warm like 1300

lostape45

I'm assuming you have a 2000, which is a cable throttle, no computer for the throttle control. Any CELs?

VicsIS350

Mine is a 1996 sorry didn't mention it