Is250 Stalling In The Morning.

[Cookster670]

Hi Guys. Having an issue with my 2010 IS250 F Sport

On 2 occassions, in the morning (melbourne...reasonably cold) I start the car, then drive up my short but steep driveway onto the road, and the car stalls (auto)

One one occassion, tank was about half full, but I only filled up last night, and this morning it happened again

This never happened with our mazda or corolla.

Anyone have any ideas why ?

[coconut2001]

Does it idle at low rpm? Maybe try a carbon clean

[Cookster670]

Thanks Andrew. Can you clarify what you mean by a carbon clean ? I was googling and found this post..is this the same thing you are referring too ? ie just using an fuel cleaner ?

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I first experienced this very same issue earlier this year, my Lexus mechanic advised this is a known problem and gave me a 250ml bottle of Lexus Injector Cleaner. The problem is now resolved and I have not noticed this issue since. He advised to add this every 3 months prior to filling up petrol. I suspect pouring Shell VPower or any high RON fuel and a heavy foot will also do the trick. Thats just my thought anyways. Hope this helps.

This is what the bottle says:

Part No. 08813-00840

"The LEXUS Genuine Injector Cleaner is a gasoline fuel additive formulated specifically for all LEXUS petroleum engines. It removes injector deposits and combustion chamber deposits, improving rough idle, hesitation and driveability"

[coconut2001]

Yeah injector cleaner, or any other carbon cleaner. The is250 is known for carbon build up which affects performance and makes the car rough idle/low rpm.
Lexus provides this service, or you can diy. I use subie upper engine cleaner and spray it in the intake inlet.

[Cookster670]

Thanks for that. The more I read, the more common this seems to be. I've seen written a few times to go into manual mode, put it in 2nd gear and redline it for about 5 seconds. (on top of using a fuel cleaner)

I should probably book it into lexus to investigate as well

[Lexus Nerd]

Thanks for that. The more I read, the more common this seems to be. I've seen written a few times to go into manual mode, put it in 2nd gear and redline it for about 5 seconds. (on top of using a fuel cleaner)

I should probably book it into lexus to investigate as well

It would be worth checking with Lexus. Most IS 250 owners who report cold start issues have an MY06-MY08 model, with known issues with the direct injection design. So the published solutions may not apply to you.

[Cookster670]

Just as an update...have run 2 bottles of cleaner through 2 tanks and also redlined it for about 5 seconds and the car has not stalled since.

[MR2QIK]

I had this problem in winter. Carbon build up. Avoid short cold start & stops (ie to quickly move car in morning), let it idle for a bit & stretch it out with a few nice fully warmed up cycle drives. Carbon clean also helps too.

[Cookster670]

I had this problem in winter. Carbon build up. Avoid short cold start & stops (ie to quickly move car in morning), let it idle for a bit & stretch it out with a few nice fully warmed up cycle drives. Carbon clean also helps too.

Thanks MR2QIK. I think i've fixed it (for now anyway). While I think what you say is correct, I shouldn't have to do that. It really should just work under any condition. The mazda and toyota i've had over the last 10 years never had an issue. (Although the Vectra I had was known to stall ALL the time due to carbon build up)

[MR2QIK]

You're right. I believe they do carbon cleans every service Stateside. I did it too for the last years I had my 250 & didn't have any problems. Actually drove nicer after carbon clean so I recommend, especially if you service yearly like I used to (avg 15k yearly).