Slight vibration

[Charp]

Charp, I'm just curious which dealer you bought your RAM at and been dealing with. I only ask because I am looking in KY at several dealerships.

Audubon Chrysler

 

[rrbhokies]

Everyone keeps trying to get their tires road forced (which I did too), and the results tend to be the same. What about those that have replaced their tires and wheels completely? Like those that buy Fuel rims and Nitto tires. They have nothing to do with Ram branded tires and wheels. Does anyone with the vibration issue have 3rd party rims and wheels? If so, then bottom line is that it's not the tires. But if I knew for certain 100% that I could resolve the issue by investing in a sick set of rims and tires, I'd be all over that in a heartbeat. Otherwise, I'm not dropping another penny into this POS until the vibration issue is resolved.

 

[iamtheav8r]

Everyone keeps trying to get their tires road forced (which I did too), and the results tend to be the same. What about those that have replaced their tires and wheels completely? Like those that buy Fuel rims and Nitto tires. They have nothing to do with Ram branded tires and wheels. Does anyone with the vibration issue have 3rd party rims and wheels? If so, then bottom line is that it's not the tires. But if I knew for certain 100% that I could resolve the issue by investing in a sick set of rims and tires, I'd be all over that in a heartbeat. Otherwise, I'm not dropping another penny into this POS until the vibration issue is resolved.

One guy here put Michelins on and claimed it corrected the issue. One guy.

 

[maddog49]

If you think it's cylinder deactivation just turn on tow mode for awhile and see if it returns. That should deactivate the deactivation.

 

[Charp]

If you think it's cylinder deactivation just turn on tow mode for awhile and see if it returns. That should deactivate the deactivation.

That's the thing; I don't believe they work correctly. Either not turning on, or off or functioning in the correct phase with the “unwanted” vibrations. I haven't seen evidence from Ram that the ATMMs are used "solely" for/with Eco mode. They are also used in conjunction with the cabin interior active noise cancellation (ANC) system to reduce ambient sounds. https://www.prnewswire.com/news-rel...lity-technology-and-efficiency-300582322.html

I've also read that the ATMMs are connected to a sensor which picks up unwanted vibrations and spin to counterbalance them. "Two Active-Tuned Mass Modules (ATMM) mounted on the frame rails search out unfavorable vibrations and apply countermeasures to eliminate them."

https://www.fcagroup.com/stories/northamerica/en-us/Pages/2019_ram_heavy_duty.aspx (Related to heavy duty trucks, but I assume same technology.)

“As the HEMI engine’s Multi-Displacement System kicks in, and sends the truck into four-cylinder mode, an underhood sensor picks up unwanted vibrations (Does the system only pick up unwanted vibrations during Eco mode or during all driving conditions?), and triggers these ATMMs to shake their internal weights in a way that’s 180 degrees out of phase with the engine’s unwanted vibration, thus canceling it out and yielding a smooth experience for occupants. This concept is called destructive interference, and it requires tweaking to the ATMMs depending upon the frame length.”

https://jalopnik.com/a-close-look-at-the-2019-ram-1500s-coolest-tech-1822465887



MY thinking is that why would Ram engineers spend time/money to develop and install vibration dampers on all V8 models, if there wasn't a vibration that needed to be dampened. If the ATMMs do not function correctly, for instance spinning IN-PHASE, rather than 180 degrees Out-of-phase then it would magnify those unwanted vibrations. These canisters are just solenoid activated weights that spin. To me, it would be easy for these things to become in-phase and out-of-phase with the unwanted vibrations while driving. Hot weather, cold weather, cheap parts and turning off and on constantly may influence the spinning somewhat as well. This may explain why customers experience it differently throughout the day or week. If the ATMMs work beyond Eco mode, then could it also be that the sensor picks up minor wheel/tire vibrations? Could replacing tires with expensive Michelins along with perfectly balancing those tires limit what the sensor detects?

Again, these are my opinions from personal experience and from online research. I sure hope someone out there finds a solution, because I’m tired of service visits.

Sorry for the long post, but I really want to solve this problem.

Have a Merry Christmas!

 

[Skud]

Everyone keeps trying to get their tires road forced (which I did too), and the results tend to be the same. What about those that have replaced their tires and wheels completely? Like those that buy Fuel rims and Nitto tires. They have nothing to do with Ram branded tires and wheels. Does anyone with the vibration issue have 3rd party rims and wheels? If so, then bottom line is that it's not the tires. But if I knew for certain 100% that I could resolve the issue by investing in a sick set of rims and tires, I'd be all over that in a heartbeat. Otherwise, I'm not dropping another penny into this POS until the vibration issue is resolved.

I replaced the stock GoodYear/22" set with aftermarket 20" and Blizzaks. No change with the vibrating.

 

[Trouble1233]

Well I got a update but it’s not one that y’all with the same problem is going to like..Short version is Ram don’t care and is taking the dealers word that nothing is wrong with the trucks..I asked for a Chrysler rep to look at it and they said their hands are tied because the dealer said the shaking is normal for the truck..I told Chrysler that if buying a 65k truck that shakes is normal for y’all I want ever purchase another product they make..So good luck on your trucks but I suggest you look at other brands because Chrysler don’t give a rats *** about customers they are only loyal to the dealerships..I’m taking mine and getting rid of it weather it be thru..lawyers,lemon law,arbitration but it’s gone and Chrysler is dead to me and I’ll be sharing this experience with every friend,coworker,Facebook,Twitter,etc...because I don’t think it was to much to ask for a second opinion when the dealership has had it 5 months and hasn’t proved they can fix it..


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[iamtheav8r]

Well I got a update but it’s not one that y’all with the same problem is going to like..Short version is Ram don’t care and is taking the dealers word that nothing is wrong with the trucks..I asked for a Chrysler rep to look at it and they said their hands are tied because the dealer said the shaking is normal for the truck..I told Chrysler that if buying a 65k truck that shakes is normal for y’all I want ever purchase another product they make..So good luck on your trucks but I suggest you look at other brands because Chrysler don’t give a rats *** about customers they are only loyal to the dealerships..I’m taking mine and getting rid of it weather it be thru..lawyers,lemon law,arbitration but it’s gone and Chrysler is dead to me and I’ll be sharing this experience with every friend,coworker,Facebook,Twitter,etc...because I don’t think it was to much to ask for a second opinion when the dealership has had it 5 months and hasn’t proved they can fix it..


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@RamCares where's that "extra layer of support" now?

FCA has a big problem on their hands. Class action suit type stuff here, folks.

 

[Icecoldak]

@RamCares
I was really going to get me a 2020 limited in place of my F150 Limited---but with all these vibration issues and such, Im Not gonna make the move, I would love to but not gonna happen till this is taken care of! WAY to many post about this issue with NO FIX!! please take that to your head quarters!! I know one customer big deal --who cares--but word is out!!!

 

[Trouble1233]

@RamCares
I was really going to get me a 2020 limited in place of my F150 Limited---but with all these vibration issues and such, Im Not gonna make the move, I would love to but not gonna happen till this is taken care of! WAY to many post about this issue with NO FIX!! please take that to your head quarters!! I know one customer big deal --who cares--but word is out!!!

The fact is..I loved the truck never owned a Ram in my life and was sold I had made the right purchase..Even after having problems I wasn’t worried I figured Ram was a company that I have heard is becoming the 2nd best selling truck in the industry..that was until I seen how they handle customers and their product..But I so pissed I posted my srt8 challenger up for sale that my wife drives and I’m getting rid of this truck..I don’t want a product in my yard that has to do with them..Before I bought my challenger I was getting price gouged and I spoke to the lead guy at SRT at the time..Ralph Giles and he told me that it wasn’t Chrysler that to go to another dealer so I did..and he was right..Its not the dealer this time it’s Chrysler So I would suggest you look else where because (Fiat)Chrysler don’t care about customers..Learn from our 65,000 dollar mistake and try another brand..


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[iamtheav8r]

The fact is..I loved the truck never owned a Ram in my life and was sold I had made the right purchase..Even after having problems I wasn’t worried I figured Ram was a company that I have heard is becoming the 2nd best selling truck in the industry..that was until I seen how they handle customers and their product..But I so pissed I posted my srt8 challenger up for sale that my wife drives and I’m getting rid of this truck..I don’t want a product in my yard that has to do with them..Before I bought my challenger I was getting price gouged and I spoke to the lead guy at SRT at the time..Ralph Giles and he told me that it wasn’t Chrysler that to go to another dealer so I did..and he was right..Its not the dealer this time it’s Chrysler So I would suggest you look else where because (Fiat)Chrysler don’t care about customers..Learn from our 65,000 dollar mistake and try another brand..


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The problem is....they're all junk more or less. GM isn't even on the radar. Just awarded least reliable brands. Ford...well...I've driven F series for 20 year and couldn't pull the trigger this time due to an aged appearance, subpar interior and the Fseries forums are full of nightmares on 4wd, leaks, moonroofs that crack, leak, won't operate, electronics acting up...etc.

My Honda went back 11 times for warranty work. 11 times in 2.5 years and 41K miles.

They are all pumping out sub-par junk, charging 60% more for it than 5-8 years ago and we're lapping it up like good little consumers. Until people stop buying this crap, they will continue to find ways to make it cheaper and less reliable and charge us more.

That cybertruck I pre-ordered is looking better all the time.

 

[Charp]

The problem is....they're all junk more or less. GM isn't even on the radar. Just awarded least reliable brands. Ford...well...I've driven F series for 20 year and couldn't pull the trigger this time due to an aged appearance, subpar interior and the Fseries forums are full of nightmares on 4wd, leaks, moonroofs that crack, leak, won't operate, electronics acting up...etc.

My Honda went back 11 times for warranty work. 11 times in 2.5 years and 41K miles.

They are all pumping out sub-par junk, charging 60% more for it than 5-8 years ago and we're lapping it up like good little consumers. Until people stop buying this crap, they will continue to find ways to make it cheaper and less reliable and charge us more.

That cybertruck I pre-ordered is looking better all the time.

Another update: Ram specialist drove and inspected. Says two tires won't road force balance and are ordering 2 more. Note that all of my tires have been replaced once already. From reading this forum, I'm not at all optimistic. Left the truck with them over the weekend and hoping it gets fixed by Monday evening. However, I repair complex medical devices for a living and I still think it's related to the ATMMs. My dad says he owned a GMC Sierra with the cylinder deactivation and he couldn't tell any difference in how the truck performed. Why in the hell can't Ram make their system work this way. There is a distinct change (sound, feel, etc) in how my truck performs when it goes in and out of "eco" mode. If they can't fix the vibration then I will pass it along to the National Center for Dispute Resolution (NCDS).

Update: Just picked up truck after 3 days at dealer. Ram Tech Adviser who was in town drove and inspected truck. He found the two rear tires would not road force balance sufficiently. Lower the numbers, the better. So they ordered two more tires. (Note: They had already replaced all four tires one month after purchase, because of vibration.) They installed the new tires and made sure to road force balance them correctly.

(Maybe the service tech newbies don't know how to effectively utilize this machine?)

Now I’ve only driven it to work, so I won’t provide a full assessment for at least two weeks. However, first impressions are good. I will continue to update you all…

 

[Billet1500 4x4]

That's the thing; I don't believe they work correctly. Either not turning on, or off or functioning in the correct phase with the “unwanted” vibrations. I haven't seen evidence from Ram that the ATMMs are used "solely" for/with Eco mode. They are also used in conjunction with the cabin interior active noise cancellation (ANC) system to reduce ambient sounds. https://www.prnewswire.com/news-rel...lity-technology-and-efficiency-300582322.html

I've also read that the ATMMs are connected to a sensor which picks up unwanted vibrations and spin to counterbalance them. "Two Active-Tuned Mass Modules (ATMM) mounted on the frame rails search out unfavorable vibrations and apply countermeasures to eliminate them."

https://www.fcagroup.com/stories/northamerica/en-us/Pages/2019_ram_heavy_duty.aspx (Related to heavy duty trucks, but I assume same technology.)

“As the HEMI engine’s Multi-Displacement System kicks in, and sends the truck into four-cylinder mode, an underhood sensor picks up unwanted vibrations (Does the system only pick up unwanted vibrations during Eco mode or during all driving conditions?), and triggers these ATMMs to shake their internal weights in a way that’s 180 degrees out of phase with the engine’s unwanted vibration, thus canceling it out and yielding a smooth experience for occupants. This concept is called destructive interference, and it requires tweaking to the ATMMs depending upon the frame length.”

https://jalopnik.com/a-close-look-at-the-2019-ram-1500s-coolest-tech-1822465887



MY thinking is that why would Ram engineers spend time/money to develop and install vibration dampers on all V8 models, if there wasn't a vibration that needed to be dampened. If the ATMMs do not function correctly, for instance spinning IN-PHASE, rather than 180 degrees Out-of-phase then it would magnify those unwanted vibrations. These canisters are just solenoid activated weights that spin. To me, it would be easy for these things to become in-phase and out-of-phase with the unwanted vibrations while driving. Hot weather, cold weather, cheap parts and turning off and on constantly may influence the spinning somewhat as well. This may explain why customers experience it differently throughout the day or week. If the ATMMs work beyond Eco mode, then could it also be that the sensor picks up minor wheel/tire vibrations? Could replacing tires with expensive Michelins along with perfectly balancing those tires limit what the sensor detects?

Again, these are my opinions from personal experience and from online research. I sure hope someone out there finds a solution, because I’m tired of service visits.

Sorry for the long post, but I really want to solve this problem.

Have a Merry Christmas!

Just unplug the ATMM's right at the modules, you will get a notice on the instrument DIC that the ATMM are unavailable. They will effectively have no power or control signal going to them and be completely disabled. If they are the source of your vibration you'll know. I have tried this and it made no difference in the vibration. In my case per an accelerometer the vibration stays a constant frequency at 60 MPH in all gears 5th - 8th essentially eliminating the engine or ATMMs as the source.

 

[rrbhokies]

Update: Just picked up truck after 3 days at dealer. Ram Tech Adviser who was in town drove and inspected truck. He found the two rear tires would not road force balance sufficiently. Lower the numbers, the better. So they ordered two more tires. (Note: They had already replaced all four tires one month after purchase, because of vibration.) They installed the new tires and made sure to road force balance them correctly.

(Maybe the service tech newbies don't know how to effectively utilize this machine?)

Now I’ve only driven it to work, so I won’t provide a full assessment for at least two weeks. However, first impressions are good. I will continue to update you all…

After road forcing my tires, there was a noticeable improvement. However, after just a few hundred miles, most of the vibrations are back. So I don't know if the tires can't maintain their balance. If it's not the tires themselves, then maybe whatever is causing the vibration self-calibrated for the road forcing and re-introduced the vibration? It's almost like the vibration is a living organism that adapts to whatever you throw at trying to fix it!!

 

[iamtheav8r]

After road forcing my tires, there was a noticeable improvement. However, after just a few hundred miles, most of the vibrations are back. So I don't know if the tires can't maintain their balance. If it's not the tires themselves, then maybe whatever is causing the vibration self-calibrated for the road forcing and re-introduced the vibration? It's almost like the vibration is a living organism that adapts to whatever you throw at trying to fix it!!

If RF balance corrected this issue for you, even if only for a while, tire quality is suspect. We're all told over and over that OEM uses the cheapest, worst quality tires available in an effort to save money. Whether that's true or not I cannot say, but your experiment seems to point to tires are being at least part of the problem. I think I'd take my truck to the largest volume tire store I could find within my area and ask them to check the radial and lateral runout of the wheels and wheel/tire package (you can do this yourself with a cheap dial indicator from harbor freight) and if that checks out have them RF balance each wheel and record the numbers before and after. I don't want to say I won't trust a dealer to do the right thing here, but having a third party with expertise and lack of bias review this could really open your eyes to what's going on.

 

[wep1981]

So this morning , 21 degrees out and the shake was very noticeable around 33 mph. Weather warmed up a bit and didn’t feel it as much. It’s gotta be something with trans or drive shaft. What a waste of a nice truck..

 

[Charp]

Update: Just picked up truck after 3 days at dealer. Ram Tech Adviser who was in town drove and inspected truck. He found the two rear tires would not road force balance sufficiently. Lower the numbers, the better. So they ordered two more tires. (Note: They had already replaced all four tires one month after purchase, because of vibration.) They installed the new tires and made sure to road force balance them correctly.

(Maybe the service tech newbies don't know how to effectively utilize this machine?)

Now I’ve only driven it to work, so I won’t provide a full assessment for at least two weeks. However, first impressions are good. I will continue to update you all…

Update: I've driven it for 2 weeks after dealer replaced two more tires and completed a thorough road force balance. My initial impressions were good and I must say they are still good. Truck rides great. I was one of the non-believers on this forum, but my trucks ride is greatly improved. So add me to the list of people that had tires replaced and a road force balance that resulted in a fix.

I would suggest that service staff put in the effort to perform an accurate road force balance. From the videos I've seen it may take considerable time to get the values as low as possible. New tires may need to be procured to match mount them correctly to achieve good results. I think the first few visits to the dealer are being performed by less knowledgeable techs and performing basic tire/wheel balancing won't cut it for these new Ram trucks. Balance needs to be almost perfect....

 

[debob]

I have a 2019 1500 Laramie with ORG and power steps. I have experienced the same vibration and buzz issue at intermittent speeds. What I discovered on my vehicle was that my power step bracket had started to come in to contact with the noise/vibration cancelling sensor mounted to the frame below the drivers door. Once I removed some material from the step bracket so it cleared the vibration and buzz noise completely disappeared. I have put over six hundred miles on the vehicle since the repair and the vibration/noise hasn't returned. I know not all of you have the step but for those who do you may want to check it. My didn't start until approximately 1500 miles. All I can think of is that the step broke in and was closing tighter than when new. Hope this helps some of you.

 

[Trouble1233]

Hmm now I’m very curious about this because the dealer installed my stuff and had to remove a set and had another aftermarket company do mine and it wasn’t long after I started having problems...I’ll be back shortly


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[Trouble1233]

Hmm now I’m very curious about this because the dealer installed my stuff and had to remove a set and had another aftermarket company do mine and it wasn’t long after I started having problems...I’ll be back shortly


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I checked mine and the electric motor is close but not touching vibration module so as of right now I’ll have to say no..I just hit 5k miles on mine and it seems to do it mostly in the morning and around 57-62mph..I’ve just about made up my mine I’m going to get rid of it..I would trade it in and get a 2500 but with all the problems with this and Chrysler has zero answers and my local dealer sucks I’m going to wait until another brand brings out their new trucks and be done with it all together...it’s really ashamed the truck is a piece of art to me inside and out but full of bugs and no customer service..


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