Front end wobble/vibration - Kia Forum
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#1 (permalink) Old 07-12-2011, 10:08 AM
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Default Front end wobble/vibration

I have a 2008 4Cyl Manual Sportage which was purchased from new.

No major accidents or any other damage to the vehicle.

It has been regularly serviced and I have had no problems with the vehicle until just before the 100,000 K mark came up.

It suddenly developed what seems to be a front end wobble, only under acceleration at around 3000 rpm and only when accelerating...as soon as you lift, the wobble is gone...so that kind of rules out tyres, rims, struts etc.

You can physically see it in the steering wheel and feel it through the seat.
I assumed it was just a tyre issue, switching between summer/winter tyres...so I thought it would go when switching back to the summer tyres around May/June... and several months out of warranty!...it didn't.

Thankfully, because the dealer had looked at the issue when it was still under warranty, and determined it was just bad tyres, they have agreed to resolve this under warranty...kudos to them.

So far they have replaced the front passenger side drive shaft as the mechanic said he could feel a little play in it, this hasnít resolved the problem and weíre waiting for the next step.

Iím seeing a few posts on the forum for similar issues and what concerns me is that some are completely different models. This could just be that people are incorrectly describing the symptoms but after reading the posts they seem to be exactly the same.

So my question is what do all these models have in common?...a Rio and Sportage for instance...surely there canít be that many parts that are common to both?
Iíd be interested in seeing if there are any other í08 Sportage owners that have the same problem or HAD the same problem.
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#2 (permalink) Old 07-12-2011, 03:04 PM
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possibly a bad inner CV joint is what it sounds like to me
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#3 (permalink) Old 07-12-2011, 03:05 PM
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Wheel bearings and 'other side' driveshaft need looking into.

Since it is only an issue when accelerating, don't rule out the transmission. It would be a good time to change the gear oil in the manual and see if the situation subsides.

BTW, from what I've seen, Kia/Hyundia driveshafts(cv's) and wheel bearings are short lived components when compared to the other automakers.
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#4 (permalink) Old 07-12-2011, 08:51 PM
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Quote:
Originally Posted by deadrx7conv View Post
Wheel bearings and 'other side' driveshaft need looking into.

Since it is only an issue when accelerating, don't rule out the transmission. It would be a good time to change the gear oil in the manual and see if the situation subsides.

BTW, from what I've seen, Kia/Hyundia driveshafts(cv's) and wheel bearings are short lived components when compared to the other automakers.
not a wheel bearing.
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#5 (permalink) Old 07-12-2011, 09:03 PM
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Like herkie said, probably the left inner joint is bad. The problem with a halfshaft vibration is that it is impossible to isolate from left to right, so substituting in known good parts is about the only way to diagnose it, unless there is something obviously wrong with a joint.

Its not just the Sportages. I've seen this problem on almost any make/model with halfshafts.

Last edited by spongebob218; 07-12-2011 at 09:05 PM.
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#6 (permalink) Old 07-13-2011, 02:46 AM
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Inner joints when they start to go bad will typically exhibit signs like a u-joint does. A clunk when changing direction (forward to reverse etc), a clunk when putting it under load and taking a load off it as well as vibrations.

Wheel bearings that are bad enough to cause vibrations would be exhibiting other signs such as play in the steering, and lots of noises like low speed clunks and a speed related howling or growling noise.

This is an odd one where you've pinned it down to an rpm range and not a road speed range. Another thought to look into are the transmission and engine mounts. but those, too, would probably show other signs. Can you get any vibrations while sitting in park and revving it up to 3K rpm's?

Double check the wear patterns on the tires to be sure its not a balancing issue.
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#7 (permalink) Old 07-14-2011, 05:04 AM
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Ball joint. Mine did the exact same thing. Mine was covered under warranty.
I had to replace both fronts before 60K miles, had lots of play, fail inspection.

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#8 (permalink) Old 09-27-2011, 02:37 PM
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i have the same problem only it is not limited to a speed range. It happens when I accelerate and is worse when going up hills. I was thinking that maybe the thrust bearing on the clutch is on its way out causing slight misalignment and hence wobble under load. My car is out of warranty (2005) so don't want to leave it in for someone to start changing parts until they find the problem. Any thoughts would be much appreciated.
Is there an easy way that someone inexperienced like myself can check for play in the ball joints?
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