Very rough idle update(coming Tuesday.)

I haven’t. Didn’t want to touch anything until FTS looked at it. Wouldn’t that throw an engine light on though?

 

That was the response I got lol

 

How smooth is your truck idling? Like can barely feel the engine running now?

 

I owned a '65 Chevy back in the 90's.
I can't recall how many times i had to pull over and re-gap the points because it would start misfiring and back firing and felt like i was driving over a bunch of potholes.

 

Yes. I’ve done that about 2 weeks ago. I went to get beers and left truck running (wife was in the truck) then got in and turned the key over…

 

Your referencing the noise level of the engine, mines quite too, just a vibration when idling

 

It’s key to note my rough idle was only when the brake was held while in Drive. Park and N were very smooth. This makes me think it was something transferring through the driveline. There are many other threads on this, so I chalk it up to build variances. I’m glad mine went away and hopefully it calms down for OP. Put some miles on it!

 

The last time this happened to me I

When I and probably @Junkhead say “quiet” we mean both noise and vibration. We’re saying we don’t detect the engine is running via all our senses.

 

I’m referencing to the vibration. It’s smooth like glass. I wouldn’t say my engine is “quiet” at idle. Can definitely hear it with the music off. But it’s not super loud either.

 

Mine is also only rough with foot on the brake pedal in gear. In park it’s much smoother. Hoping mine goes away too, it only has 3800 miles so I’m right around the miles you said yours stopped

 

I guess we could check the tachometer, but I ignore it unless I’m bored

 

My tach never fluctuates but it idles “rough” only in gear

 

I went through this effort even going as far as trying to raise the idle rpm of 680. If you blip the throttle with foot on the brake it smoothed out. With over 4k miles now it runs 685 smooth as can be.

 

That’s new information. When in drive with the foot on the brake, your engine is under load. That’s slightly different than “at idle”. Regardless, I don’t remember my 2016 A/T running rough in that context.

When you talk to your tech, make sure you explain that subtly

 

So bizarre

 

Just took video of my truck idling. HVAC off, did press the brake a few times:

https://youtu.be/8xDjkDhIoCM?si=m2QQ4gjY1zfpgDZ2

 

Yeah I guess I never mentioned that part or wasn’t clear on that

 

Most AT vehicles I drive did that to some extent.

 

The Corolla rental car 2024 brand new idled rough in gear too

 

Shifter vibrates just a hair. I don’t feel the vibrations anywhere else.

https://youtube.com/shorts/_mVqTCb_Y9w?si=mTWRFZVKUMij77Ee