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Car Forum / Hyundai Cars / February 200606 Sonata - Rear Clunking Noise
This is driving me crazy. After hitting smaller bumps going no more than 40 mph I hear what appears to be a recurring clunking/rattling noise almost as if the rear suspension isn't absorbing the impact (it is though). It's a definite rattle and related to hitting the bump. It's most pronounced in the passenger rear as I had a friend drive me around while I was in the trunk. I've heard some talk briefly about this, but no fixes have been offered or suggested. It's been to the dealer to no avail and I've even driven the same vehicle and the noise is present in that too. It's a GLS with V6 and 17" tires. Anyone else experiencing this too? > This is driving me crazy. After hitting smaller bumps going no more than > 40 mph I hear what appears to be a recurring clunking/rattling noise [quoted text clipped - 6 lines] > too. It's a GLS with V6 and 17" tires. Anyone else experiencing this > too? It's probably the gas tank. Try again with a very full tank, and see if the noise is cured. sounds like a dealer service issue, with or without a full tank of gas is irrelevant. take it and have them look at it. also, how well do you trust you friend driving you in the trunk? that would concern me a lot more. > This is driving me crazy. After hitting smaller bumps going no more than > 40 mph I hear what appears to be a recurring clunking/rattling noise [quoted text clipped - 6 lines] > too. It's a GLS with V6 and 17" tires. Anyone else experiencing this > too? >This is driving me crazy. After hitting smaller bumps going no more than 40 >mph I hear what appears to be a recurring clunking/rattling noise almost as [quoted text clipped - 5 lines] >driven the same vehicle and the noise is present in that too. It's a GLS >with V6 and 17" tires. Anyone else experiencing this too? Yep, I have the problem too. It's not related to the fuel level... I tested that last night. As soon as the weather warms up a little in May, I will be climbing underneath the car and pushing, shoving, and tapping on things to find out what's loose back there. I bet a little neoprene foam could work wonders. If you listen for it, it will drive you nuts. Ignore it... if you can. :) PS: Did you test the internal trunk release? Hey, Jimmy Hoffa could be alive today if he would have had one.  SignatureBob This is driving me crazy. After hitting smaller bumps going no more than 40 >mph I hear what appears to be a recurring clunking/rattling noise almost as >if the rear suspension isn't absorbing the impact (it is though). It's a >definite rattle and related to hitting the bump. It's most pronounced in >the passenger rear as I had a friend drive me around while I was in the >trunk. I've heard some talk briefly about this, but no fixes have been >offered or suggested. It's been to the dealer to no avail and I've even >driven the same vehicle and the noise is present in that too. It's a GLS >with V6 and 17" tires. Anyone else experiencing this too? Yep, I have the problem too. It's not related to the fuel level... I tested that last night. As soon as the weather warms up a little in May, I will be climbing underneath the car and pushing, shoving, and tapping on things to find out what's loose back there. I bet a little neoprene foam could work wonders. If you listen for it, it will drive you nuts. Ignore it... if you can. :) PS: Did you test the internal trunk release? Hey, Jimmy Hoffa could be alive today if he would have had one. SignatureBob ------------------------------------------------- Okay so here is the sccop, I bought a 2006 GLS V6 in October 2005 and last week I had a "come to Jesus meeting" with my dealer after my car has been in the shop 9 times since I bought it. I have had all the same issues as discussed here and more and here is the sccop. The Clunking Noise: A design flaw in the suspension system that Hyundai is aware of but no fix for it yet. It is possible to minimize the noise in some cases. Part of the noise may be coming from the jack and the styrofoam it is sitting in. Try removing it. Also the spare tire cover (Black plastic shheting) that covers your trunk has two plastic/metal clips that fit directly into two holes that are in the frame of the car body. Try insulating them with foam to prevent rattling. While these alone will not get rid of the clunking it may help minimize it. Two additional problems I have had: With a full tank of gas you will hear a rumbling noise for about 20-25 miles after you fill up. This is the result of no baffles in the gas tank. Again Hyundai is aware of it but no fix yet. The last one is a high pitched whine that my car and others have developed at around the 60 to 70 MPH mark (2K RPM). After much fighting with my dealership and Hyundai they have finally admitted that this too is a design flaw dealing with the Variable Intake Manifold. When the air comes in it causes a high pitched whine. They know it and have not figured a fix for it. Hope all this information helps. Thanks for the info. Good to hear that these issues have been reported to Hyundai Motor co...My 2006 Sonata GLS V6, 1500 miles, has the first two...clunking rear and rumbling gas tank when full. Please post any solutions you have found... Thanks, Seppo > This is driving me crazy. After hitting smaller bumps going no more than > 40 [quoted text clipped - 67 lines] > > Hope all this information helps. >The Clunking Noise: > [quoted text clipped - 6 lines] >foam to prevent rattling. While these alone will not get rid of the >clunking it may help minimize it. 1 thing is for sure, we haven't heard the last of this one. The natives are getting restless... SignatureBob The clunking in the suspension is unfortunately a characteristic of the vehicle. The noise transmits too well from the suspension through the rear shock mounts and there is little insulation in the rear area of the vehicle. I have no idea whether Hyundai intends to address these issues with design revisions or whether such revisions can be made retroactive. >The clunking in the suspension is unfortunately a characteristic of the >vehicle. The noise transmits too well from the suspension through the >rear shock mounts and there is little insulation in the rear area of the >vehicle. I have no idea whether Hyundai intends to address these issues >with design revisions or whether such revisions can be made retroactive. Wonder if poly urethane washers could be used to help isolate the noise transmitted through the shock mounts? SignatureBob > The clunking in the suspension is unfortunately a characteristic of the > vehicle. The noise transmits too well from the suspension through the > rear shock mounts and there is little insulation in the rear area of the > vehicle. I have no idea whether Hyundai intends to address these issues > with design revisions or whether such revisions can be made retroactive. HT, is there any indication as to why only some vehicles experience this noise? A friend of mine recently picked up an '06 LX, and I hear this noise while in his car, but not in my '06 GLS V6. Eric A coworker investigated the suspension noise on one car (V6, unsure of trim level). He found it to be coming from both rear strut tower areas. And it sounded like shock noise. Everything was tight. He also drove another car with the same package and it sounded the same. In fact, I thought the noise was present in all. But it's possible the suspensions are different in some models, causing the noise to not be present in all of them. > A coworker investigated the suspension noise on one car (V6, unsure of > trim level). He found it to be coming from both rear strut tower [quoted text clipped - 4 lines] > the suspensions are different in some models, causing the noise to not > be present in all of them. It is entirely possible that the sound is present in my car also. I just have never noticed it. And I am usually sensitive to that kind of noise too. I will listen for it further and see if I can reproduce it. Eric >A coworker investigated the suspension noise on one car (V6, unsure of trim >level). He found it to be coming from both rear strut tower areas. And it [quoted text clipped - 4 lines] >suspensions are different in some models, causing the noise to not be >present in all of them. You guys have my sympathy, because noises like that can be a real nightmare to fix. Let's HOPE it's the shocks themselves. That would be the most painless remedy for Hyundai, the dealers, and the customers. <fingers crossed!> Even if the shocks aren't defective, perhaps another shock profile can heel in the noise. That could also possibly fix that little "floaty" feeling you get on smooth roads at cruising speeds. SignatureBob Doubtful that it's just a "noisy" suspension. I got a chance to ride in the trunk and it's only from the passenger side, not the driver's. The noise isn't a clunk and then it's over. It's goes on for a couple seconds sounding as if something is loose. I highly suspect the exhaust system, but haven't given it enough look-see yet. Perhaps the rubber isolators in the hangars are to blame. Let me know if anyone else has any ideas. > The clunking in the suspension is unfortunately a characteristic of the > vehicle. The noise transmits too well from the suspension through the > rear shock mounts and there is little insulation in the rear area of the > vehicle. I have no idea whether Hyundai intends to address these issues > with design revisions or whether such revisions can be made retroactive. It sounds like you may have an actual problem then, Zy. If that's the case, the dealer should be willing to investigate until they determine the cause and repair it. I've seen a couple with itching noises, but never an actual abnormal clunk noise. I did have one car, however, where the customer was complaining of an inaccurate fuel gauge and found the fuel pump module broken off the mounting plate in the top of the tank, leaving the module loose enough to bounce around the tank. [original post is likely clipped to save bandwidth] >The clunking in the suspension is unfortunately a characteristic of the >vehicle. The noise transmits too well from the suspension through the >rear shock mounts and there is little insulation in the rear area of the >vehicle. I have no idea whether Hyundai intends to address these issues >with design revisions or whether such revisions can be made retroactive. That type of issue was exactly what I suspected with my 06 sonata. It does not sound like an unusual noise or noise level to me! Rather, the vehicle is so quiet in all other respects it really stands out. On many cars, the same noise would be masked by others. Given that, if the intent was to make a very quiet car, it is a defect in design. Sure hope they can fix it. gerry SignaturePersonal home page - http://gogood.com gerry misspelled in my email address to confuse robots |
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