Rough idle in 2021 V6

It comes and goes, is this normal? I use Shell 87, truck has 3K.

 

Define rough if you can. My 21 sport idles between 500 and 650 rpm when in drive and warm. When it's closer to 500 you can feel it a bit more, but I wouldn't call it rough.

 

It normal. The fuel injectors are cleaning themselves.

 

i use arco 87

 

It idles at 600 in drive at the traffic light, but its idles rough like some cylinder's are cutting out. I will just take it to the dealer next week.

 

This. It’s the direct injection.

I will agree it idles a bit “rougher” than other vehicles, but per Toyota it is normal. I asked a tech at the dealer while there for other things.

 

its going into atkinson cycle for cleaning.

There is an extra step where the piston vacates air before firing. This feels rough because the engine isn't powering that cylinder

 

If its cleaning it must be stuck in the cleaning mode, because its continuous.

 

Well it doesn't go out of atkinson cycle when idling. Bring it to a toyota tech and have them sit in the car with you

 

I'm going to dump some injector cleaner in today.

 

Injector cleaner won't hurt but I doubt it'll solve your "issue."

 

I'm using mostly shell 87 E10 in my 2020 3.5 and its always been really smooth. When the engine is cold, and truck in gear it will raise, and lower the idle till it warms up some....is this what your feeling?...its normal.

 

It does it even when warmed up.

 

When you go to the dealer, compare to another new truck on the lot. it may very well behaved the same way, if not, you'll have the proof right there.

 

If mine does that, its very un-noticeable. When the engine is cold and stopped at a traffic light, you will notice a jump in idle and back.