Vibration at certain speeds
Hi All, I posted the following question several days ago, but have had no replies. Is there no one monitoring this site, or does no one know the answer?
Front end vibration
Posted by: arizonabob - Jul 01, 2011 at 01:08 PM
About: 2006 Kia Sorento LX
Help! I've been trying to solve a front end vibration problem for 2 months now. Bought all new tires, shocks, and had the U-joints replaced. Now i hear that my model doesn't have U-joints, but has CV joints instead! Before I get in the mechanic's face, anyone know for sure? The vibration happens at certain speeds (40-45, 75-80 MPH)
it could be warped rotors causing it, do you feel it alot when breaking aswell? or is it specifically those speeds?
Hi JDavidson, Thanks for your reply. Just had a complete brake job, and it made no difference. And braking didn't affect it at all anyway. Do you know if this model has U joints or CV joints? Or, does anyone? Thanks again, Bob
unfortunately, i dont know what type of joints it has, nor do i even own this vehicle. wish i could help ya there but as part of the brake job, they did replace the rotors correct? as warped rotors can cause a great deal of vibration especially at elevated speeds. another thing is it could be a bad allignment, do you notice any excessive wear anywhere on the tires as that would be a good indicator.
correct,it has cv joints,no u joints,this is a front wheel drive car,only rear wheel drive have u joints on the drive shaft.yours has no driveshaft.did he do a break job or not,that dont really matter heat caksec a rotor to warp so does a air gun when installing new tires,they should have collored tourk bars that go on air gun a chart to go by that tells them the tourk on your vehicle lug nuts,I belive on your car it is 80 lbs.if it (wheel-lug nut) is put back on with the little lug socket it can go up to 120 lbs,which will warp the rotors.eather replace them or just have them turned,most repair shops have this machine.another thing the set of tires you bought 1 could be out of round or not balanced right.all this will cause the vibration,if it wasent doing it before.
Hi, Thanks again for your help. Re: the brake job, it was complete and changed out the rotors and turned the drums, but, as I said, braking didn't affect the vibration before or after the brake repair. Re: torking the lug nuts, I don't know what they used, but between all the spin balancing, changing out the new set of tires that came with the vehicle to a completely new set of tires, checking the front end alignment, etc., it would be hard to go back and find out if they torked them to a particular degree. However, the vibration preceded all this, so I don't think it has anything to do with it. I'm really starting to think that the CV joints may be the problem -- I had a "master" mechanic work on it, and he said that he changed out all three U joints, none of which had any grease. If Papa is right that my vehicle doesn't have U joints, it looks like he might be a liar. If he changed out the CV joints and simply mispoke and said U joints, wouldn't there be 4 of them anyway?
correct,no u joints on your car,their is 2 cv joints,1 on each front axle.when they go bad,when you turn the steering wheel left or right past a 1/2 turn you will here them clicking,a constant clicking until steering is straight again then it is quiet.
I'm pretty sure the 2006 Sorento (first generation/BL) is a rear wheel drive based vehicle didn't become front wheel drived based until the current Sorento (second generation/XM). You're Sorento should have U-joints, if it's a 4x4 it also has CV joints on the front wheels. The rear wheels are driven by solid rear axle. 2006 was also the last year with the 3.5L Sigma engine, which I've never really cared much for. Where are you feeling this vibration most prodominantly in the steering wheel or the seat? A vibration in specific speed ranges as small as those would usually lead me to start with tires or tire balance being the issue, that being said I have seen a bad CV joint cause a very specific vibration in an Optima (MG) at 63-65 mph with the steering wheel turned just a tick off center. I take it your Sorento is well past it's 5 year/60k mile base warranty if you're the original owner I'd take the vehicle to a Kia dealer if you haven't already been doing so in case the issue is in the drive axles because the non-transferable limited powertrain warranty provided to the original owner for 10yr/100k miles would cover your CV joints should they be the issue. Just a suggestion, good luck getting your concern corrected.
I have a 2005 kia sorento, rear 2wd. My car started vibrating when I accelerate between 30 and 35mph. I brought it in to the shop and they said it's the U joints. There are 3 of them on my car. I am looking for parts right now cause I hear the joints are $103.00 each from the dealership. I would hate to put this much money out and find out it's something else....email me if you have any other info...firstname.lastname@example.org Thanks
Bob I don't have the answer but I have experienced nearly exactly the same thing you have experienced with my 2011 sorento. It vibrates around the same speeds you posted and it's not all the time but most of the time. I have had my wheels balanced/rotated twice in the last 5 months and also got a full alignment, it didn't help. I did this through my local midas shop who I have been going to for 6+ years and he isn't out to rob me and he is puzzled himself. He finally told me that it may be something in the drive train and that I should take it back to the dealer and make them look at that seeing it's under warranty. I'm going to schedule an appointment and see what happens - wish me luck
Hi KK, Thanks for your input. Since my last post I have put all new tires on and it made no difference. I've now pretty much done everything anybody can think of plus 2 sets of new tires. I had my drive line checked when I changed out the U-joints, but I'm now ready to do it again -- I'd be interested in knowing if that turns out to be your problem. All the best, Bob
I have a 2004 Optima and I am having the same issue with vibrations and at the same speeds Arizonabob mentioned. Some time the vibrations are extreme while other times they seem to be very minimal.
something that has just crossed my mind is unlikely alothough it is possible that you actually have a bent rim on the car
or a out of round tire,just adding to last poster.
Hi Kia Owners I Think I might know your your problem My Wife has a 2003 kia sedona mini van it Had the same issues It was vibrating around 35 to 45 mph and when she would let off the gas and then press the gas it would go away We had the tires balanced and that wasn't it we couldn't figure it out . After some time went by One day I was riding with her I noticed It was getting worse letting off the gas and pressing on the gas she had to do more often .So we decided to take it to our mechanic and we told him what it was doing and at what speed it would vibrate and what we did to stop it from vibrating so we left it from him and a day or two later he called us and he said it was a clutch in the Transmission that was going bad causing the vibration at 30 to 45 mph. So she took it Kia and they looked at it and confirmed the same diagnoses so they replaced the transmission and the Vibration has gone away I hope this helps .
thanx, scooter. i will have my mechanic take a look at the trannie. all the best, bob
you DO have u joints. Sorento is a rear wheel drive vehicle. It is NOT brake rotors. Brake rotors do NOT technically warp but rather get a build up on them giving the pulsating effect when brakes are applied... I had it at 68-72, Kia replaced the rear end and it helped but it did come back. The rotated all of the tires in different configurations and determined it is one of the tires but they don;t know which one (nice huh) then I just had my timing belt and water pump replaced and the problem is Much less than it was... which leads me to believe it is something engine related perhaps harmonic balnce or something. Will let you know what I find but yours sounds definately like tires out of balance.
bob, i hope that you are no longer having this problem, but in case you are i have a suggestion. this particular model has had problem with the harmonic balancer(crank pulley) coming loose and actually causing the vibration its made to correct. you usually find out the hard way when the crank bolt breaks and you can no longer drive the car. i would visually inspect the crank pulley with the egnine running and make sure it doesnt wobble. not just at idle but also at higher rpms.also will the vibration come and go with acceleration? or is it constant? if its constant it almost has to be in the driveline
Hi James, I will check out the crank pulley ....can you tell me where and what it is? Re: whether the vibration comes and goes with acceleration, I don't know but will put it through some tests tomorrow and report back. Thanks for your help.
Hi James, The vibration seems to lessen somewhat when I take my foot off the accelerator, which I would assume means that it is drive line caused rather than wheels or tires. Can you tell me more about the crank pulley? Thanx, Bob
Hello all, just had tires replaced, new struts and shocks, alignment and greased both front and rear dirve shaft. Vibration is still there but not nearly as noticeable. I have noticed that it is not just a 3000-3200 rpm thing because when i run it in 2nd or 3rd gear at those rpms, i don;t notice it, yet if i run it up to aboe 4000 or 4300 I notice it because again that gets me to the 68-70 range. only other thing i can think of is drive shaft.......
bob the crank pulley is what connects to the crank to run all your accesory belts. its at the bottom of the engine and has 2 belts running around it i beleive. its about 8-10" round and should not have any noticable wobble to it
Well still at it.. It's driving me nuts! RPM has nothing to do with it, it's all about 68-70 mph. mine is a stick so if i am cruising at 72 and push the clutch in i can feel (though not as bad) as cruising under load at the mph.
Thanx James -- I will check it out. All the best, Bob
Check your Universal joints in the drive shaft. I think this may be your issue. My 2005 rw drive is making a rumble noise. hope this helps!!! Let me know
I have a 2005 Kia Sorrento LX and I have a rear wheel drive that just had the exact same problem. In my case it was a combination of carrier bearing, u joints and drive shaft. They originally replaced the carrier bearing with the three u joints and it fixed the problem. However, one of the u joints had a defect in it and fell apart on me 10 miles away from the mechanics. They replaced that u joint but only to discover that a new vibration had started. They thought that it might be the clutch or transmission, but my clutch/tranny mechanic said with 100% certainty that it was definitely in the drive shaft. Took the car back to the original mechanic and shaft should that the front end of it was badly damaged. It needed to be completely replaced and balance. Since it was caused by the defective part that they installed, I was able to get that replaced at no additional charge. I did of course pay for the carrier bearing and u joints that I originally went in for.
wow, alot of crap on here leading to, well, nothing helpful. I understand that everyone after given advice says "well, ill have my mechanic check it out...". See the problem clearly is many people just dont know what to look for. You need to know how much "play" should be present with many different components, where the vibration is felt, at what speeds, braking or accelerating or coasting, in what gear, a/c on or off, engine mounts broken, drivebelts loose, check engine light on, etc... these are all things that "mechanics" should be able to look at and be able to figure it out. this is not rocket science. but from what i have heard on here it seems all these "mechanics" work at advanced auto parts- they replace parts, they are not diagnosing the problems. i could go on and on how to diagnosis issues related to an air pump hooked to a highly sophisticated electrical system, but that would take too long. look for a "technician", just like getting bids on jobs for your house, interview them, figure out what skill level they have when diagnosing problems. DONT settle for someone who knows how to drain fluids and call them your "mechanic"....they will leave you with a bad taste in your mouth about your car, when in reality, its the person that YOU choose to take care of your pride and joy.
Hello. I had a vibration problem on my 2011 sorento LX V6 AWD for 3 years. The dealer changed rear differential and drive shaft. Finally, last month, he changed a rear wheel bearing and he found that a defect cardan. There is no more vibration.
If you are having vibration issues, before you do/have any more work done you might want to check and see if there are any TSB's that address the issue. A TSB is a Technical Service Bulletin that dealers get that address a variety of issues. Dealers won't tell you because the have to pay for so you need to ask. You can also look up your make and model; just Google Technical Service Bulletin's and just your vehicle and it should take you to sites you can click on to narrow your search. Hope this helps.
I do not have answer for you but in my experience it is a small misfire that only shows at heavy loads lke when shift fron 1 to 2, or highway speeds. 60 to 75 in my case i still trying to find out out exactly what it is but i have no luck but i dud plugs wires i hope is not the coils i am not looking forward to take that intake manjfold off again that timing can cause that problem since this is an interference engine if you happend to find out what it is becore i do please le us know
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