2022 idle

Hey all, started noticing that while at a red light or in a drive thru and such that the idle will go down to 500 rpms or so I think and will randomly kick back up a few for a few seconds and go back down. This morning I noticed it & also had the window defroster on. Is this a normal thing or something I should be looking more into to address. Never had a vehicle behave like this. Thanks!

 

Not sure what you are wanting for. 2022. Dealer.

 

With the technology figured it could be normal, when I tried searching initially I ended up on the Tacoma forum where others said this was normal for when the ac compressor is being utilized even for defrost mode. Was trying to verify if that’s what’s going on here. My dealer hasn’t been the best if you have seen my previous issues, trying to save trips there as much as I can. If others here experience the same thing then problem solved!

 

It’s pretty normal, it wants to idle low to save on fuel a bit, when the mechanical or electrical load goes up it will rev up a little as needed to compensate.

 

@Tmiesowicz - mine neber does that, under any load. Do it at night and see if the lights dim.
@Agent_Outside - umm, no, this car never wants to save fuel and that behavior is not normal.

 

I remember noticing this on my '03. The idle kicks up a few hundred RPM's while waiting at a stoplight.

I got so used to it that I don't really notice it in my '19. But, it makes sense as @Agent_Outside mentioned.

 

I thought it was a common engine type thing. Load increases the engine needs to change to support that load increase.

 

So your 2019 does it as well? I wouldn’t really notice it if I wasn’t looking at the cluster. I wonder if it was raising while my compressor was engaging with defrost on. I will have to play around and see if it does it without the compressor being used.

 

I'm pretty sure that's what's happening.

To be honest, I can't say with 100% certainty that I've noticed it in my '19. I'm pretty sure it does, but I don't pay enough attention to confirm. I'll have to pay closer attention this weekend and report back.

 

mine behaves the same way. when i first noticed it i thought it was going to stall... but it never does, nor does it dip below ~500 rpms. it idles lower than almost any vehicle i've owned that i can remember.

and now that i think about it, i "felt" it before i glanced at the tach to see where it was sitting. if i slide it into park, the rpms will climb up a couple hundred (i believe).

 

Sounds good report back if you remember lol...

 

Seems spot on to what I am experiencing, I always get good help here when I have some wonders...coming from always driving old vehicles if the Rpms did that there was usually a issue...but I didn’t think a 2022 4.0L engine would have issues this soon as it’s tried and true. Maybe it does save a hair of gas, I averaged 17.6 mpg last tank! Dash said 17.3, my mpg meter seems to be pretty spot on since new which is amazing.

 

i might have tried googling 5th Gen idle speed to alleviate my concerns, but can't remember.

i suppose you could ask if its possible to have the idle set higher if it really bothers you?

 

speaking of idle concerns though.... my GF has one of those CRVs that idles too low, such that you get uncomfortable vibrations. if the 4Runner felt uncomfortable, i'd have it looked it. but i believe its just the way it is.

 

I tried searching but not with 5th gen in it and ended up on Tacoma forums and 4 runners from 2006 and below, doesn’t really bother me just wanted clarification if it was the Norm. All good!

 

It's fine, just drive.

 

Pretty much any car with an ecu will adjust rpm a smidge, depending on the load caused by electrical and AC load, by and based on where it is on the warm up cycle.
Look at the rpm once it’s fully warmed up with all accessories/hvac turned off….it should be very stable.

Every engine design will have it’s own inherent best idle RPM. Basically it’s just above where it would stall, and high enough where it can respond cleanly to any new engine load. Back in the carburation and early fuel injection days you could adjust idle at the carb or throttle body, but nowadays the ecu takes care of that.

 

yeah, and some cars have different paths to reset the ecu idle speed. with some its just disconnecting the battery for a bit, with others there's a more complicated step by step process.

 

Everything above is correct, just went out on a drive and idle was steady at 600 rpm in drive and stopped, turned on the defroster and it jumped right away and went up and down from 600-800 or so. Shut the hvac down and went back to steady. All good here! Thanks again

 

Yes, disconnecting the battery for awhile resets the ecu back to factory settings. You can also hurry it along by clicking the battery leads together.

This can really mess with your head if you have an older vehicle with carbon buildup in the throttle body, because it won't stay running.

 

I have a 1929 Ford Model A pickup. At Model A meets there is often a “low-idle” contest. Reminiscent of Walter Mitty (the Danny Kaye version). Teh-puck-eh-ta-puck-eh-ta…

 

With this conversation being so idle, I figured I’d step on the accelerator.


Idle conversation makes me think of this video
https://youtu.be/pDHzK3Xe7Yw

 

Turn it up to 11!