High Revs

[Andyajb]

Hello all is it normal for my is250 to rev quite high on start up I'm finding myself putting it straight into drive with foot on brake to stop it reving so hard it settles after a while but I'm concerned ?...

[stevet]

What does it rev too? About 1500 normal at first.

[Andyajb]

Yes between 15000/160000 just doesn't sound right it's my first automatic so thinking it might be normal just want to check

[stevet]

Its not auto the manual will be the same. Just the way the engine is. Be careful if its icy/snow as the auto at those revs will try to push you forward even when your braking so the abs gets triggered easily. I either wait till the revs go down or put into neutral when braking.

[koppatroppa2002]

Hi Andyajb, if its 1500 revs I believe its the DPF cleaning himself and one thing you should do only: hit the motorway on wknd or so for a long drive. That should do!

[stevet]

Hi Andyajb, if its 1500 revs I believe its the DPF cleaning himself and one thing you should do only: hit the motorway on wknd or so for a long drive. That should do!

Its a 250 so no DPF

[Derek870]

Yup mine does exactly the same, for us old farts its acting like the choke! Especially noticeable in the cold weather

[ChumpusRex]

Yes. It's high revs to warm up the engine.

All modern cars do it, but most Japanese cars tend to rev a bit higher than European ones when cold.

[ColinBarber]

Indeed, correct behaviour for a Toyota engine - the ECU is programmed this way. The thinking is that emissions are reduced by getting the engine up to speed by fast idling rather than running at a normal idle speed with a rich mixture for a longer time.

Similar to the old fashioned choke, except that used a higher idle just to stop the engine from stalling, rather than for emissions. The modern engine could idle at low revs when cold if it wanted to without stalling, it just doesn't by design.

[Andyajb]

Excellent response guys my mind has been put at ease as for old farts Derek870 I'm only 37 lol so im old farty ish .haha

[Derek870]

Andy.................very ish! I'm 51 and consider myself a spring chicken! (not)

As Stevet said, just be aware when it is revving at idle it can pull away quite quickly if you don't have your foot on the brake, I shot out of my drive a bit sharpish once or twice lol

[Andyajb]

Thanks all I'm happy now and loving Lexus never thought I would ever want one but seen this one and bit the bullet and got it looking forward to chatting and meeting maybe at some point cheers.

Sent from my iPad using Lexus OC