Strong vibrations at 135km/h (1.6T 4wd) - Hyundai Forums : Hyundai Forum
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post #1 of 17 (permalink) Old 05-23-2019, 04:49 PM Thread Starter
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Strong vibrations at 135km/h (1.6T 4wd)

Hey friends,
I have 2016. Tucson 1.6T 4wd. A few days ago, I was driving on highway at about 135 km/h (cruise control was on). Suddenly, I noticed noise from back end of the car. It increased rapidly and after 3-4 seconds whole car was in strong vibrations and noise. Steering wheel vibrated strong and whole car. I applied brakes and also brake pedal vibrated (ABS was not engaged). Vibrations didn't disappear until I stopped a car after probably 300 meters. I parked on the grass by the way. Checked wheels bolts. They were tightened properly but I added a few more tork to left front wheel. It seemed that problem was solved. I drove about 20km on the same speed and nothing happened.
But today I was on the highway again. After 3-4 minutes at 135km/h (again cruise was on), the same happened. Again I stopped the car. I got out but nothing was weird. Everything seemed to be okay. Again, noise and vibrations didn't disappear until I stopped the car completely. After that, I drove 25km back to home but not faster than 70km/h and car worked fine.
Does anybody have any idea what can cause the problems? I checked wheel rims and all balancing weights are on place. Everything looks perfect visually. The only suspicious thing is noise from brake calipers when I drive on bad roads.
I called the dealer and they say that they can not accept the car before Monday. Then we will have test drive.
But I will be happy to have any tip from other Tucson drivers. My car has 20.000km and I drive very carefully. It is almost new. But unfortunately my satisfaction with Tucson decreases with every day During these 20.000km, I had problem with TPMS (sensor replaced), with seat cover (replaced), with water in tail light (replaced) and with parking brake (adjusted something ...). Too many problems


Sorry for my bad English, and thanks for help

Darko.
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post #2 of 17 (permalink) Old 05-23-2019, 10:28 PM
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Since you mentioned it seemed to come from the rear: possible driveshaft issue, (ie; carrier bearing, rear input shaft, rear axles or drive unit.
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post #3 of 17 (permalink) Old 05-24-2019, 02:21 AM Thread Starter
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Thanks.
But what confuses me is why there are no vibrations always at 135km/h? They appear suddenly.

From my experience with cars, if bearing is bad, I can always hear it and noise increases as speed increases. In this case, everything is normal and suddenly car starts to vibrate terribly.
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post #4 of 17 (permalink) Old 05-24-2019, 11:55 AM
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Could be a bad spring. On a previous vehicle of mine, I had vibration from the rear, and it turned out to be a broken spring. That might also explain the noise you heard, though you did not describe the noise.

Michael


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post #5 of 17 (permalink) Old 05-24-2019, 05:47 PM
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Balance your wheels bro
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post #6 of 17 (permalink) Old 05-24-2019, 05:48 PM
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Get it Speed balanced at the tyre shop
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post #7 of 17 (permalink) Old 05-25-2019, 02:54 AM Thread Starter
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Quote:
Originally Posted by Reynold Khemkaran View Post
Balance your wheels bro
I checked but all balancing weights are on place.
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post #8 of 17 (permalink) Old 05-25-2019, 08:42 AM
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Originally Posted by Dare4x4 View Post
I checked but all balancing weights are on place.
They could still be out of balance. Wouldn't hurt to have them rechecked anyway, just to rule that out.
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post #9 of 17 (permalink) Old 05-25-2019, 09:00 AM Thread Starter
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Of course.
Will be done on Monday
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post #10 of 17 (permalink) Old 05-25-2019, 09:34 AM Thread Starter
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I can not believe how stupid are technicians at dealership! About month ago, they replaced one of TPMS sensors. But it seems that they mounted the tyre without balancing and not at the same position on the rim. See the pic:


Fortunately, point on the tyre is still visible. It is apparently on wrong place but balancing weight is on the old place where it was before. This is front right tyre. I hope that this is the problem but I will visit them on Monday and ask a few questions.
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