Rough Idle Occasionally

What does your 3rd Gen idle like...can you feel engine vibration in the cab and through steering wheel? I have 3,300 miles on my 19 TRD OR...I find it odd that it seems to idle rough at times...I called the dealer and they suggested bad gas but it's done this since I bought it...someone suggested it will level out after I get to about 5 to 7 k miles but that just doesn't sound right...any thoughts?

 

Where is truck sitting when you feel this. I remember I came to a stop over some uneven street surface and felt some vibration and could see my shifter shaking some.

 

I have noticed my 3.5 is fuel sensitive. Same with my Lexus GS 350 f sport AWD.

 

Gets better over time.

 

I've searched for a common denominator and cant really find one...this past Friday it was pouring as it has been for about two weeks here and it was really idling rough

 

Atkinson cleaning cycle maybe?

 

I’ve wondered this myself. Sometimes I also get slight surging while doing 40 or so, giving it slight gas to keep up with traffic. About 200 miles on mine.

 

What octane are you guys using

 

I was choosing to not freak out or anything cause of such low mileage. I’m still on the tank of gas the dealer put in, I would assume 87.

 

Yeah im getting poor mileage too that why I am wondering what octane people are using

 

I'm starting to notice this as well ... i have 7K miles and it's very subtle ... almost similar to the a/c starting (type feel ..on off on off) it's killing me.... anyone else know of this issue ?

 

Too much ethanol...

 

Mine idles rough time to time, 500 to 600 rpm and then it goes back up. Been told its normal so I make the radio louder.

 

This will cause the idle to fluctuate and could be what you’re experiencing

 

When i drove it off the lot, it had a full tank. Assuming it was 87, ran fine idled pretty smooth, no hesitation when driving. After first tank ran out , ive been using 91. It feels like it runs smoother, might just be in my head. I had quite a few japanese cars/trucks, and noticed it runs a bit nicer and gets a bit better mpgs with 91 or 94.

I only use my truck on weekends, i DD a company work van(4.8 chev small block baby! Great engine) so i dont fill up as often. Gas is super expensive here, like 1.75 per liter regular. If it was my DD i would probably use 87 , as it ran and idled smooth.

IMO 91 octane makes it run smoother and gets better a bit better mpgs. Probably because it has no ethanol?

Good luck OP and enjoy your truck. These trucks are awesome, you will love it.

 

Very very fuel sensitive engine. Mine will rough idle when I get crap gas. I'm at 120k on mine and I get 25.5 freeway and 19 to 20 combined driving. with crap gas that goes to 19 freeway and 16ish combined.

 

I still have this happening but I'm no longer referring to it as a "problem" I guess...granted I don't much like that it does this... getting ready to hit 6k miles.

 

Idles and sounds and feels like a small diesel sometimes...perfectly normal at least so far..

 

every so often i get rumbling at stoplights and such through the steering wheel, feel it in the seat, and the mirrors even shake a bit. 25xxx miles, 2016 V6. dropping it into neutral and the vibration goes away. haven't worried about it too much.

 

I recently started dropping it into N as well at lights...feeling it through the cab of the truck just annoyed the $hit out of me though...reminds me of cheap 4 banger rental cars from Enterprise...it's frankly unacceptable imo.