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Engine RPMs Bouncing

Monkey
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Monkey Enthusiast

Monkey

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I've been running premium since day 1. Dealer still has no clue what's going on and they've had it a week.

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Monkey Enthusiast

Monkey

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I have not but I imagine that would work as it seems to either be something to do with the cylinders going into eco mode or the shifting is occurring a little too early so it bouncing.

Picked it up after a week at the dealer yesterday and they now want to hook up a laptop and drive it around for several repros.

I thought about using the Range Technology module to disable the AFM/DFM....

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  • 3 weeks later...
Gangly Senior Enthusiast

Gangly

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I'm not sure how relatable this is, but my wife's Honda Pilot does the same thing and its a known issue with similar year models.  A TSB was issued by Honda stating that the transmission fluid breaks down prematurely causing a surging effect when driving, particularly under light load.  I haven't researched the specifics on the matter since her vehicle is past its warranty period and its not a big deal to her, but its still bothersome enough to me that I was curious enough to check on it.  Maybe this helps, maybe it doesn't, but good luck in your endeavors either way.

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Monkey Enthusiast

Monkey

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Well after a week in the shop they still have no idea what's causing it. The next step is for me to apparently drive around with a technician who has a laptop hooked up to the truck

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EXSlider400 Senior Enthusiast

EXSlider400

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I noticed mine was doing that the other day again so I put it in manual 9 and it stopped.  I believe that also prevents it from going into anything but eight cylinder mode which is probably where the problem is coming from

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Monkey Enthusiast

Monkey

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Whelp, what do you know. I unplugged the range technology Auto stop-start and the RPM bouncing is gone!

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  • 3 months later...
Dustin53 Enthusiast

Dustin53

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On 9/18/2020 at 11:38 AM, Monkey said:

Whelp, what do you know. I unplugged the range technology Auto stop-start and the RPM bouncing is gone!

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I unplugged my range as well. Tachometer stopped bouncing. 

  • 2 years later...
FL_LOCAL New Member

FL_LOCAL

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On 8/29/2020 at 10:52 AM, Monkey said:

I've been running premium since day 1. Dealer still has no clue what's going on and they've had it a week.

Sent from my SM-G988U1 using Tapatalk
 

 

On 9/18/2020 at 11:38 AM, Monkey said:

Whelp, what do you know. I unplugged the range technology Auto stop-start and the RPM bouncing is gone!

Sent from my SM-G988U1 using Tapatalk
 

How do you in plug this feature my 2021 chevy Silverado 1500 is doing the same thing plz help

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