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#1 (permalink) Old 06-06-2010, 10:57 AM
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Default Squealing noise

This morning we got in our Sorento and experienced a strange squealing noise when accelerating. It does not do it when revving the engine in neutral. The pitch of the squeal seems to change as the gears change. Also, it doesn't seem to happen in reverse either. I will call the dealer Monday and set up an appointment for it and the recent TSBs. Has anyone else come across this? The car was purchased in Feb. and now has about 2600 miles on it. I must say so far we have experienced way to many squeaks, squeals and rattles with the Sorento.

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#2 (permalink) Old 06-06-2010, 01:55 PM
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Originally Posted by KeinoDoggy View Post
This morning we got in our Sorento and experienced a strange squealing noise when accelerating. It does not do it when revving the engine in neutral. The pitch of the squeal seems to change as the gears change. Also, it doesn't seem to happen in reverse either. I will call the dealer Monday and set up an appointment for it and the recent TSBs. Has anyone else come across this? The car was purchased in Feb. and now has about 2600 miles on it. I must say so far we have experienced way to many squeaks, squeals and rattles with the Sorento.

Odd. Does it do it when slightly and carefully powerbraking the eng and trans in D? Just not in N free reving or R backing up? if so an not, then it is trans related and not ENG BELT related. If it does it in D power brakeing then it is still belt related and not trans related. As there is a different load map on belts in N/R then in D sometimes.

A FWD 2.4L I4 6spd Auto in a Sorento is an unknown combo. This might be one of the many fun things to come we find out. They are sensitive to belt tension. Or transmission goans this might be the YING to the YANG of the AWD 3.5L V6 6spd Auto thud/bang.

Last edited by 04SorentoLX; 06-06-2010 at 02:03 PM.
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#3 (permalink) Old 06-06-2010, 04:39 PM
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Well,

After setting a couple hours in a dry garage I took it for another drive and did not notice the squeal. It was in a pretty good rain yesterday, so maybe it was a wet belt. What is odd though is the fact that the pitch changed with the shift of the tranny. Never heard of that before with a slipping drive belt. Guess I'll give it a little time to see if it returns.

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#4 (permalink) Old 06-07-2010, 10:33 AM
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Well,

After setting a couple hours in a dry garage I took it for another drive and did not notice the squeal. It was in a pretty good rain yesterday, so maybe it was a wet belt. What is odd though is the fact that the pitch changed with the shift of the tranny. Never heard of that before with a slipping drive belt. Guess I'll give it a little time to see if it returns.

Slightly loose belt then huh. Or one that is really sensitive to moisture. Maybe as the belt gets older they will not be. AS for pitch with trans shift anything is possible really. Echos are funny things. And slight change in eng position might make it appear to you to change as the trans shifts. Think on this a bit. It did not do it in N/R where the eng was not torqueing on the mounts at all and then torqueing in the other direction form D in R. Now put it in D and drive. The eng torques the reverse of what it was when quiet in R. As the Eng revs and shifts in D it torques back and forth and changes slightly on the mounts in the same direction. BTW the torque in R is constint and does not change as it will when shifting 1-2-3-4-5-6.
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#5 (permalink) Old 06-07-2010, 09:10 PM
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Default Squeal

I have the same squeal and have noticed it intermittently since I purchased the vehicle. After approximately 3500 miles the sound became much more noticeable. I had the dealer look at it, but they were not able to reliably duplicate the sound enough to truly diagnose it. Like previous posters, I have noticed that this sound only occurs when actually driving, as opposed to just revving the engine in park. I'll try the power-brake the next time I hear the sound. It definitely sounds like a belt, but doesn't reproduce like the issue is a belt. This occurs both with the AC on and off. Will post back once I hear back from the dealer. Honestly, between this issue, the drivetrain noise from the front passenger side, and the faulty/noisy AC compressor, I'm not very satisfied with this vehicle and am having a serious case of buyer's remorse...
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#6 (permalink) Old 06-08-2010, 07:21 PM
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I have the same squeal and have noticed it intermittently since I purchased the vehicle. After approximately 3500 miles the sound became much more noticeable. I had the dealer look at it, but they were not able to reliably duplicate the sound enough to truly diagnose it. Like previous posters, I have noticed that this sound only occurs when actually driving, as opposed to just revving the engine in park. I'll try the power-brake the next time I hear the sound. It definitely sounds like a belt, but doesn't reproduce like the issue is a belt. This occurs both with the AC on and off. Will post back once I hear back from the dealer. Honestly, between this issue, the drivetrain noise from the front passenger side, and the faulty/noisy AC compressor, I'm not very satisfied with this vehicle and am having a serious case of buyer's remorse...
Glad to know I'm not the only one hearing the squeal! It has not returned since my last post. If it does I will post here again. I have not yet reached the point of "buyers remorse", but if things continue this way.....
I chose the Sorento over a Honda CRV, based on appearance, fuel mileage ( jury's still out on this one) and more bank for the buck. Hope I didn't make a bad choice.
I will say in comparison, my 03 Accord with 110,000 miles has had no rattles and squeaks. Great car, in fact the best one Ive ever owned.
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#7 (permalink) Old 06-08-2010, 08:43 PM
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Default Squeal

I drove my car for the first time in a few days today and found that the squeal is no longer intermittent. It consistently squealed all the way to and from work. The squeal is NOT a belt. I'm 90% sure that it is coming from the transmission. It only occurs when the vehicle is in motion and is most noticeable when in 3rd and 4th gears between 2000 and 3000 RPM. It occurs not only during acceleration, but during deceleration as well. I've also noticed that the squeal changes pitch when the vehicle is going around corners. This leads me to believe the issue is somewhere in the transmission or front axle. I talked to the dealer today to find out the status of my parts (AC Compressor) and told them about the squeal getting worse. They informed me that they are planning to remove some components on the axle and determine if there is an issue with lubrication not getting to specific parts. Unfortunately, that's all the information I have. I will say that this appears to be something that Kia is aware of -- possibly not as aware as they are of the "drive-train thump" noise, which I also have.

I sincerely hope they determine a fix for these issues quickly. Considering the age of my vehicle (3100 miles) and the price, this is a pretty ridiculous situation.
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#8 (permalink) Old 06-08-2010, 10:41 PM
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I had a loud squeal coming from my Sorento one day after work and I automatically attributed it to something in the brakes. I came to a stop and floored it in reverse and applied the brakes. It seemed to get whatever was causing it out of there because I never heard it again. It was kind of an alarming squeal though as I was surprised it was coming from my vehicle as it wasn't doing it going to work.
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#9 (permalink) Old 06-15-2010, 07:15 PM
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I went to pick up the Sorrento yesterday for the oil leak (see my other thread). I got into the car and began to drive away. Guess what, the squeal was back!
The manager had a tech ride along as I drove. We both clearly heard the noise coming from the right front in the wheel well area. We also noticed the noise went away when the vehicle was coasting and no power was put to the drive train. The noise would only appear while driving and torque was being sent to the drive train. He put the car up on a rack, wheels suspended, to try and reproduce the noise by starting the engine and putting the tranny in gear. No noise. evidently no torque, no noise.
I was told to go ahead and leave with the loaner car and they would call me once they had diagnosed the problem.
As I was about to leave, the tech called me back saying he might have found the problem. while on the rack, wheels suspended, if we spun the tire by hand back and forth we could hear a dry metallic scraping in the right outer drive hub where it meets the wheel assembly. He believes it is a bad hub.
The replacement hub is suppose to be in Wednesday. Hopefully his assumption is right so I can take the Sorrento home. Keep in mind this has 2900 miles on it.

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#10 (permalink) Old 06-21-2010, 09:25 PM
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Please keep us posted on what you're hearing regarding the replacement hub. I picked up my Sorento at the dealer today after having the AC compressor replaced. The squealing noise continues to be and issue.
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