Last post on Sep 23, 2013 at 6:13 AM
You are in the Hyundai Sonata
What is this discussion about?
Hyundai Sonata, Sedan
#399 of 494 Re: Dealer says it's normal [espo35]
Nov 12, 2009 (6:05 pm)
I wonder. I've driven a couple of dozen (at least) 2006-2009 Sonatas over the years. Only one had a suspension noise I considered unusual. It was definitely a "thunk", albeit a faint one, over large bumps like railroad crossings. It was a used 2008 car with about 24k miles on it. So why do only some Sonatas exhibit this noise?
Assuming it is a design issue, it might only manifest itself in some cars. Perhaps the design issue is in the way the suspension components fit together--the tolerances in other words. It might be hard to align the components properly at the factory. Or they are susceptible to getting out of whack after a time. But if everything is done just right at the factory, there's no problem and no unusual noise.
Here's an example of how this could work, using another well-known issue with a Hyundai. The 2001-6 Elantra is known for having an issue with front wheel "shimmy". Only some Elantras have this issue, and some don't have it initially but develop it later, e.g. when tires are rotated or rebalanced or replaced. I have personally experienced this issue on the two Elantras I owned (still have one). In each case, there was no wheel shimmy initially. But when I replaced the tires or had them rotated and rebalanced, the shimmy showed up sometimes. A careful rebalancing using a specific kind of Hunter balancing machine fixed the shimmy each time. But some owners have trouble completely eliminating the shimmy. The theory on this is the design of the Elantra makes it more susceptible to even a small out-of-balance condition on the front tires than on most other cars.
#400 of 494 Something to check
Nov 14, 2009 (10:37 am)
I drive 5 or so different Sonatas every day. I've yet to hear one doing what is described here.
One noise I HAVE heard on 2006-2010 Sonatas is caused by a slightly "loose" front, lower conrol arm. I would call this more of a "click" than a "thunk", though.
This is easily corrected by the dealership by re-torquing the mounting bolts.
I probably do this about once a month and it works for the concern I am being approached with- clicking when turning and/or accelerating with wheels turned.
#401 of 494 Re: Something to check [espo35]
Nov 16, 2009 (9:02 pm)
I can't help thinking that'" once a month" so nonchalantly mentioned sems to me - somewhat excessive.. I had a toyo echo - took it out the dealer - and nothing else needed for 7 years.
Test drive with maints mgr today - ticking in engine is injector motor - who knew? - at 120 kph I can hear this in the cabin.!!
Transmission..."seems to be a bit different.."
suspension wasn't co-operating...!
Ordered new accelerator module (we test drove another manual car - there's a difference!!)
Will change hydrolic clutch fluid to synthetic - "maybe air, may assist this or that..." blah blah technical... I think it's the gate or the thrust bearing
"Will check suspension arrms bushings etc etc..."
Fingers Crossed !!
#402 of 494 Re: I've got the thunk on my car [steven39]
Nov 17, 2009 (8:11 am)
Well, personally speaking, with only one post "reporting" a clunk on a 2010 and this being the internet after all where anybody can write anything about any subject this one post may or may not be accurate or even a person who owns a Hyundai of any year or type I wouldn't put too much stock in it and use it to avoid purchase of a Sonata...
#403 of 494 Not the only one
Nov 21, 2009 (7:23 am)
There are a lot of owners with the "thunk" problem and I'm one. Like me, I think they are just disgusted with Hyundai ignoring the problem. This is my 3rd and last Hyundai.
#404 of 494 Re: Not the only one [boomer20]
Nov 21, 2009 (7:54 am)
Define "a lot". I meet 10 Sonata owners every day and haven't had one complain so far.
#405 of 494 Re: Not the only one [espo35]
Nov 21, 2009 (6:08 pm)
Given that you work in Hyundai service, that's a good thing indeed. However, as we've noted before, this is a discussion for those who are having the issue. So let's let people discuss it here, please.
Nov 24, 2009 (4:29 am)
After they replaced my gauge cluster I spoke to the service manager that hyundai consumer affairs asked me to see about the suspension problem. I got the same old stuff from him that I had heard all along. "We found nothing wrong with the suspension. The noise is normal for the car". I asked about driving another car to compare with mine. He said he had no 2009 sonatas. I asked about driving a 2010.
He said he couldn't do that because it wasn't the same year car. He would have to get a regional manager in to ride with us to do that. He said he would call when he could set that up. That was two weeks ago. Guess it's back to hyundai consumer affairs to see what else they might do. I don't think it will ever be fixed. I will still report what happens here.
#408 of 494 Re: NO FIX [lenstang]
Nov 24, 2009 (2:57 pm)
Get rid of that piece of junk like I did. You are right it will never be fixed. After 3 months of driving my 2009 Sonata I stopped in at the showroom and yelled about what a piece of junk you sold me. There were a few customers in the showroom at that time and the sales manager came to me and said can we discuss this problem in my office. I told him that I made 5 trips to the service depatment and each time I was told we put in new shocks front and rear and made a couple of adjustments. I was fed up with that bull, and I told him to give me money back. He saw my frustration and how mad I was, so he said let's go for a ride in a brand new Azara he had in the show room. Wow what a difference in the ride. Right there on the spot we made a deal for a few dollars more and I have the Azara since Now 2008 and I love it. Great car, everything is smooth and quiet.