trdsw20

does any of your IS shakes alittle when you stop a red light or unnormal idle? dealer told me is normal.

FiveOhNine

I think the AWD models tend to idle a bit more rough than the rest, but not sure.

Evil Teo

iTrader: (13)

i saw a thread on this once and the answer was that it is normal and they explain why. i forgot where but u can do a search.

pocky

iTrader: (12)

You mean, does the rpm dip when you come to a stop?

kuuqi

no i think he means the car physically shaking a bit at idle. i've felt it at times though i wasn't sure if it was the wind blowing hard.

slee18

iTrader: (1)

Does it shake all the time? Does it shake hard where the cars rocks side to side?

Sometime the car do shake. The automaker call it a lean-idle misfire. They try to lean out at idle to reduce emissions and save gas at a stop light. My 250 has idled weird twice in the last year. It doesnt happen for a long time tho.

Hope it helps!

lexboi250

iTrader: (10)

i dont' have the shake issue, but ever since my car is lowered, i feel the vibration a lot more when i'm at a stop light, in drive mode with brake on

sdub74

I've had the RPMs dip and the engine vibrate like it's about to stall. It's happened to me a couple times, always at a red light. I've asked the dealer to check it out a couple times when I was in for service, they came back each time and said they found nothing wrong.

Little E

iTrader: (2)

How about this? Check out this thread of mine:

https://www.clublexus.com/forums/sho...+at+Stop+light

mikeho

Yeah, it's happened to me. My friend in the passenger seat noticed it first. Thought it was weird, but I just engaged and released the clutch and the vibration went away. I think you can do the same by putting your transmission into neutral.

slee18

iTrader: (1)

once you start driving it goes back to normal. Probably the timing was advanced and then when you stopped it it retarded itself too much.

I have never had it stall like that so that is the bright side.

sdub74

Cool, thanks for the info. I guess if it's normal, I won't worry about it.

is250gurl

mine has done the same thing to me a handful of times and i'm now at 40k. said something to the dealer yesterday about it when i was in for an oil change since it happened again that morning. they checked the computer for any codes it may have thrown but found nothing. they said i most likely have carbon build up and also need the injectors cleaned. they suggested a throttle body cleaning and injectors cleaned. i say a bunch of b.s.! the car is too young for all of that and i only use premium fuel since i got it brand new. what do you all think?

Shervin350

Any fix for this?

magnuscat

Bad gas can also cause this. Ethanol is absolute crap. Swings in temperature can cause condensation which reacts with the crappy ethanol. Ever taken out a gas tank that has been used for a log time with ethanol? Nasty.

Depending on where you live blends can be even worse than other places.