Noisy Suspension

Forgot to mention, the springs need to be specified between the normal Elantra and the Sport. Other than that, they seem to be the answer perhaps the strut mount TSB. but rather than right side, seems like left side.

mone said:

Hi manuajohn,

Thank you for the update to your case. Yes, keep us informed to what happens. I have posts on Facebook as well, and there is one guy getting his passenger side motor mount changed as well.

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It's not the ball joint for sure. It was replaced yesterday(along with the driver seat cover due to abrasion wear from the seatbelt) and the noise is very much present. They ordered upper strut nuts as a follow up and gave the car back to me. Now that looks like the strut mount TSB that was being talked about a few days ago here. I do not know if the new ball joints have tamed the wheel hop issue cos I'm on winters now and they spin all too easily to create any sort of wheel hop.

manuajohn said:

It's not the ball joint for sure. It was replaced yesterday(along with the driver seat cover due to abrasion wear from the seatbelt) and the noise is very much present. They ordered upper strut nuts as a follow up and gave the car back to me. Now that looks like the strut mount TSB that was being talked about a few days ago here. I do not know if the new ball joints have tamed the wheel hop issue cos I'm on winters now and they spin all too easily to create any sort of wheel hop.

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Wheel hop is an issue with this car. A stiffer lower engine mount will help on the street but not cure it. The correct answer is better control arm bushings.

Given the timing of that TSB I am not aware of any AD Sports that were produced as early as April 2016.

Hi R1600Turbo,

I agree. But, it's interesting to note the VIN's affected. The TSB has, KMHD. My car's VIN starts with that. And it was made in Feb 2017. Wonder what the VIN's are of the cars affected in this thread?

mone said:

Hi R1600Turbo,

I agree. But, it's interesting to note the VIN's affected. The TSB has, KMHD. My car's VIN starts with that. And it was made in Feb 2017. Wonder what the VIN's are of the cars affected in this thread?

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KMHD doesn't really mean much though. K = Korea, M = Hyundai, H = Passenger car, D = Elantra 2001+.

The production years are the thing to look at and that doesn't include us.

I did break down the VIN To confirm what it all means. Just going with their VIN range of affected lot.

But it’s still worth a try too see if this TSB resolves the problem, which is similar to the regular Elantra.

Seems like a lot has been tried by dealers, but not this as outlined in this TSB. They probably think it’s not applicable given the date range, and not considered, even though there’s history with this and the regular Elantra.

But still worth investigating. It may just be the root cause!?

BTW, there’s another person trying the passenger side motor mount on the FB group. Keeping an eye on that too.

R1600Turbo said:

Given the timing of that TSB I am not aware of any AD Sports that were produced as early as April 2016.

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Mine's produced in April 2016 and the VIN does start with 'KMHD'

manuajohn said:

Mine's produced in April 2016 and the VIN does start with 'KMHD'

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All AD Sport's will start with KMHD because it's a very basic outline of what the car is, as pointed out above. My guess would be you have one of the first produced and there will be very few of them. Let's not forget that our suspension is different from the normal Elantra. Granted Hyundai could have used the very same nut for the top of the strut.

Now I'm curious! I bought mine in Feb 2017. At that time I guessed the Sport being imported from Korea, if the manufacture date was within 12 months it would be fine given the time the car went on sale and import time. What's the usual time between assembly and sale? Do I own the oldest known Sport in this forum?
Also at the time I got mine which is a top of the line version, there was a Blue August 2016 6MT base available as well. I did not even try that out as I wanted the wife to be able to operate the car and I personally wanted the better MPG of the DCT. So did not mind sacrificing the driving involvement of the MT.

Hi R1600Turbo,

Seems that in both the Alabama and Korean made part manuals, the strut assembly is the same. The only parts you have to specify is the strut and spring (ES for 'sport' version). These are different from the regular Elantra. The rest seems to all the same.

My car was produced in Feb 2017. On the FB group there is a guy who has had his passenger side strut changed, but that didn't fix it. Now he is going to ask to change the driver's side strut assembly. Also, there is another guy having his passenger side mount changed, but he is more and more thinking it's the driver's side strut.

I don't know if the people on this thread are the same people in the FB group. But, one thing for sure, there are quite a lot of people who seem to have this problem.

manuajohn said:

Now I'm curious! I bought mine in Feb 2017. At that time I guessed the Sport being imported from Korea, if the manufacture date was within 12 months it would be fine given the time the car went on sale and import time. What's the usual time between assembly and sale? Do I own the oldest known Sport in this forum?
Also at the time I got mine which is a top of the line version, there was a Blue August 2016 6MT base available as well. I did not even try that out as I wanted the wife to be able to operate the car and I personally wanted the better MPG of the DCT. So did not mind sacrificing the driving involvement of the MT.

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MPG between the two is a wash really. I haven't seen anyone report any significant difference. My 6MT averages 32-34mpg on average, though my commute is mostly 50-60mph cruising.

mone said:

Hi R1600Turbo,

Seems that in both the Alabama and Korean made part manuals, the strut assembly is the same. The only parts you have to specify is the strut and spring (ES for 'sport' version). These are different from the regular Elantra. The rest seems to all the same.

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Overall design is the same, but the strut tuning is different, therefore making it a different strut. All Sports come from Korea.

mone said:

My car was produced in Feb 2017. On the FB group there is a guy who has had his passenger side strut changed, but that didn't fix it. Now he is going to ask to change the driver's side strut assembly. Also, there is another guy having his passenger side mount changed, but he is more and more thinking it's the driver's side strut.

I don't know if the people on this thread are the same people in the FB group. But, one thing for sure, there are quite a lot of people who seem to have this problem.

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December '16 build, 40k miles, no problem here.

Hi R1600Turbo,

I'm aware that the sport comes from Korea (only model). I was just comparing the regular Elantra to the Sport (and their parts listings), as they both seem to have this same clunking issue (other than the strut and spring. But fittings at the top of the strut are separate from the strut, and seem to be shared by both the regular and sport Elantras).

Sometimes, subsidiaries and dealers won't consider a problem to be the same as the model is slightly different, and need confirmation from the manufacturer. I work for a manufacturer as a national service manager, and these things need to be challenged from our end, or else you'll never know. And have to do 'process of elimination'.

40K miles, and all good. Lucky! Hopefully when we all resolve we'll enjoy an nice quiet car. Too bad you can't ride with one of use with this issue. Video of it does no justice...!!

Update: on the FB group, someone insisted on changing their passenger side motor mount, after even printing out the thread on the issue, and Hyundai and dealer agreed. He reported back that it was changed and it seems to have eliminated the noise (so far in his limited driving). Hopefully the motor mount is the root cause, and perhaps a new TSB? Will keep us posted!

mone said:

Update: on the FB group, someone insisted on changing their passenger side motor mount, after even printing out the thread on the issue, and Hyundai and dealer agreed. He reported back that it was changed and it seems to have eliminated the noise (so far in his limited driving). Hopefully the motor mount is the root cause, and perhaps a new TSB? Will keep us posted!

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The P0455 issue is way more common and there is no TSB for that. Doubt they will do one for this.

Hi R1600Turbo,

You're probably right. If it's indeed the motor mount, probably a bad lot of for a limited amount of cars out there. Just hope the person that has had his motor mount changed solves the issue!

I would also image that the motor mounts would be a new spec since the engine bay is the same from the regular Elantra, but rather than the 2.0 there's the 1.6 and is mounted with different motor mounts because of the different dimensions of the engine. I'll check out the part manuals later to see for my own curiosity.

Anyway, thank you for keeping this thread alive. Looks likes a step closer to resolving this mystery!

Update: I’ve tagged a few guys on the FB group and a few of them chimmed in and have ended up changing their passenger side motor mount and has resolved the issue.