2020 Telluride AWD rear end jerking thumping and vibrating

[2020Telly]

I apologize in advance if this is a highjack....

My brand new 2021 EX Nightfall with AWD has a sort of "pulsing" going on in the rear end. It's not so much a vibration, although there might be a minimal amount. It's more of a sound, that increases with speed. It's present in some form at all speeds. It's not very loud, and the stereo and road noise drown it out.

The low tire pressure light tripped with a recent cold snap (Florida). I added a little air but now that it's warmed back up outside, the pressure is high. I'll drop the pressure to see if it has any effect.

Any other ideas?

I think you are right to start assuming tires, tire pressure and weather changes if it's a pulsing that appears to coincide with tire rotation that increases with speed. How many miles? I've heard of new rubber on tires being a little more noisy as they start to get used. Are you sure you don't have an acorn or rock stuck in the tread?

 

[Boudin]

I think you are right to start assuming tires, tire pressure and weather changes if it's a pulsing that appears to coincide with tire rotation that increases with speed. How many miles? I've heard of new rubber on tires being a little more noisy as they start to get used. Are you sure you don't have an acorn or rock stuck in the tread?

I've got about 500 miles. I was thinking that's enough to get the tires broken in. The sound definitely coincides with tire rotation.

I opened it up on the highway yesterday, because it's awesome. I would think anything lodged in there would have been thrown, but I'll check it later.

Man, if it's an acorn or something like that, I will be psyched. Lots of acorns in my driveway...

 

[2020Telly]

I've got about 500 miles. I was thinking that's enough to get the tires broken in. The sound definitely coincides with tire rotation.

I opened it up on the highway yesterday, because it's awesome. I would think anything lodged in there would have been thrown, but I'll check it later.

Man, if it's an acorn or something like that, I will be psyched. Lots of acorns in my driveway...

I once had a large rock trapped behind the brake rotor that made a nasty sound. I couldn’t see it when stopped but a very astute Firestone tech asked me to drive slowly in the parking lot and saw it wobble. A long screw driver and 3 minutes later he helped me pry the rock out and everything was fine. I’ve also had snow and ice impacted in the wheel that I could not see and once it melted and fell off I was fine.

 

[JerseySXP]

Picked her up - the Road Force Wheel balance has seemed to help.

Noticeable difference in the "water bottle" test - water isn't vibrating nearly as aggressively.

Do I still feel a little something - yes...and for now I'm chalking it up to my crappy roads.

EDIT - This helped at lower speeds. Vibration still there at higher speeds.

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[JerseySXP]

I'm still very interested in waiting to hear what the driveshaft people tell @Bev

I also have a specialist driveshaft place not too far from me that I'd love to have them look around.

 

[Bev]

I'm still very interested in waiting to hear what the driveshaft people tell @Bev

I also have a specialist driveshaft place not too far from me that I'd love to have them look around.

The problem is what we thought. It's a design flaw.
The front section is 5 degrees off causing the vibration once the pressure of the speed is up at 60 mph.
I will scan and upload once I'm home.

 

[JerseySXP]

The problem is what we thought. It's a design flaw.
The front section is 5 degrees off causing the vibration once the pressure of the speed is up at 60 mph.
I will scan and upload once I'm home.

Amazing that you went to that length to find this information out.

Would love to forward it to the head of product quality that I got in contact with - it will be hard for her to talk herself out of this one...

They nailed the vehicle all around but it looks like we may have found a potential issue here...

 

[Kwim]

The problem is what we thought. It's a design flaw.
The front section is 5 degrees off causing the vibration once the pressure of the speed is up at 60 mph.
I will scan and upload once I'm home.

excellent. you can make a class action lawsuit due to negligence in the design.

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[Kwim]

Amazing that you went to that length to find this information out.

Would love to forward it to the head of product quality that I got in contact with - it will be hard for her to talk herself out of this one...

They nailed the vehicle all around but it looks like we may have found a potential issue here...

but she never called me and did not write.

 

[JerseySXP]

but she never called me and did not write.

The lady never called or wrote me back - someone on her team did.

Huge difference - she still gave someone else the responsibility of dealing with me.

 

[Bev]

excellent. you can make a class action lawsuit due to negligence in the design.

You and I both know Kia knows what the problem is.

 

[Bev]

Amazing that you went to that length to find this information out.

Would love to forward it to the head of product quality that I got in contact with - it will be hard for her to talk herself out of this one...

They nailed the vehicle all around but it looks like we may have found a potential issue here...

I think several of you will need to get your own independent diagnosis in order for a class action suit. One won't do the job against a giant.
It doesn't matter how many tires the road force, it will not fix the problem and eventually, if this isn't fixed it will start causing more issues.
I'm waiting for them to send me another receipt because they put 2020 on mine and it's a 2021.

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[Kwim]

You and I both know Kia knows what the problem is.

of course he knows, but they won't tell you about it.
@Bev ,
you are unraveling this riddle and I am just sure that I will contact you soon and ask you to sign papers for some kind of compensation. It will be very disappointing if you stop developing this topic. Don't give up, lead to the end.

 

[Bev]

of course he knows, but they won't tell you about it.
@Bev ,
you are unraveling this riddle and I am just sure that I will contact you soon and ask you to sign papers for some kind of compensation. It will be very disappointing if you stop developing this topic. Don't give up, lead to the end.

If they pay me what I asked for, I will sign off on it. But, I will give you guys all the ammunition I have acquired for your battles to carry own.
The Driveshaft Specialist said it's a little under $1k to fix. If I were to have it fixed, then that voids my warranty.

 

[Kwim]

I think several of you will need to get your own independent diagnosis in order for a class action suit. One won't do the job against a giant.
It doesn't matter how many tires the road force, it will not fix the problem and eventually, if this isn't fixed it will start causing more issues.
I'm waiting for them to send me another receipt because they put 2020 on mine and it's a 2021.

You need to get a full report from this company, where everything will be described in detail. Also, a specialist from this company can be an expert witness and you will need to take him to court. You are in vain afraid of the giant, if everything is done correctly as the rules of the court say, then everything will be ok.
Good luck.

 

[Kwim]

If they pay me what I asked for, I will sign off on it. But, I will give you guys all the ammunition I have acquired for your battles to carry own.
The Driveshaft Specialist said it's a little under $1k to fix. If I were to have it fixed, then that voids my warranty.

do not will give, it will be indicated in the document - you do not have the right to ever and anywhere mention, tell, write about what happened. Yes, Yes, that will contain your agreement with Kia, I know for sure. Maybe you can upgrade the convention, but I'm not sure. time will tell.

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[Kwim]

I think several of you will need to get your own independent diagnosis in order for a class action suit. One won't do the job against a giant.
It doesn't matter how many tires the road force, it will not fix the problem and eventually, if this isn't fixed it will start causing more issues.
I'm waiting for them to send me another receipt because they put 2020 on mine and it's a 2021.

+ there should be no assumptions in the report: the vibration presumably caused by ... - it will not work. There must be conclusions in the form of a type approval - vibration is caused by a curved shaft.

 

[Bev]

The problem is what we thought. It's a design flaw.
The front section is 5 degrees off causing the vibration once the pressure of the speed is up at 60 mph.
I will scan and upload once I'm home.

This is what he wrote:
The Kia Telluride and the Hyundai Palisade are the same vehicles. their engine design is a little too high for the driveshaft to work properly.
The rear end angle is at 0 degrees and so is the transaxle. The rear half of the driveshaft is also at 0 degrees, however, the front section is at 5 degrees. With the difference in angle, there should be cv heads at the middle as well as the transaxle attachment. There is a cv head in the middle at the center support bearing. there is a single u-joint not a cv head at the trans. A single u-joint connection at the trans with a difference of 5 degrees will certainly cause a noticeable shudder at speed.

 

[2020Telly]

I would think that could be a safety problem if it limits the ability to control the vehicle or the driveshaft eventually breaks while you are driving. If the NHTSA registered your compliant, I would think that Kia would need to address it at some level.

 

[Bev]

I would think that could be a safety problem if it limits the ability to control the vehicle or the driveshaft eventually breaks while you are driving. If the NHTSA registered your compliant, I would think that Kia would need to address it at some level.

We all need to complain to the NHTSA.