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I have been driving my new 2016 civc 1.5 turbo for about a month now. Every time I get above 45 miles an hour and hold the speed constant the RPM bounce up and down about 100 RPM. As soon as they are Up then they go Down, as soon as they are down they go up. It is like the car is not sure if I am going to accelerate or slow down. Same thing happens on cruise control. The speed stays the same, but I feel a slight surge of power and then slow down. It is slight but annoying on long trips.
 

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Haven't heard of this yet. I know older civics can have pulsing RPMs but yours is new. Best to bring it in. Not sure what's causing it.
 

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Yea, doesn't sound normal, even my 9th gen CVT doesn't do that that i've ever noticed. It's got some quirks about it (especially in cold weather) but not rpm pulsing.
 

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The other Civic X forum has several multi-page threads this topic. Some people have been able to make it go away, some report temporarily, by disconnecting the battery long enough for memory to drop in the ECU(s), either on their own or coercing their dealer into doing it. Some have had dealers find "no problem". Some have reported being told that Honda says it's a known issue being investigated. My money is on it being a tuning/calibration problem with some feedback control loop causing oscillation, and will, at some point who knows how long from now, be fixed with a firmware update.
 

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Yes my Civic has been doing it also. Except mine u can also feel it. My dealership contacted Honda engineers and they said a hard reset will temporarily fix it . They r working on a software/hardware fix for it.
 

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The other Civic X forum has several multi-page threads this topic. Some people have been able to make it go away, some report temporarily, by disconnecting the battery long enough for memory to drop in the ECU(s), either on their own or coercing their dealer into doing it. Some have had dealers find "no problem". Some have reported being told that Honda says it's a known issue being investigated. My money is on it being a tuning/calibration problem with some feedback control loop causing oscillation, and will, at some point who knows how long from now, be fixed with a firmware update.
That has me thinking there either is going to be a TSB released on it or one is already out at the moment. But too bad we won't easily find out about that... typically takes someone on the inside of dealers to get that for us.
 

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Did anyone manage to fix the rpm problem or bring it into a dealership for a check?
As noted above…
The other Civic X forum has several multi-page threads this topic. Some people have been able to make it go away, some report temporarily, by disconnecting the battery long enough for memory to drop in the ECU(s), either on their own or coercing their dealer into doing it. Some have had dealers find "no problem". Some have reported being told that Honda says it's a known issue being investigated.
 

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For that reason, those who don't already have basic tools (but have the drive to do easy jobs like the above) should invest in a small kit that includes all the common ends. Rather spend $15-20 on a cheap 20-30+ tool kit that will last forever than having to go to the dealer for small things.
 
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