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'11 Sportage transmission "scrubbing" noise #4484796
08/10/17 01:12 PM
08/10/17 01:12 PM
Joined: Apr 2016
Posts: 1,198
Campbellsville, KY
Alex_V Offline OP
Alex_V  Offline OP
Joined: Apr 2016
Posts: 1,198
Campbellsville, KY
A customer asked me about a noise his '11 Sportage (2.4L/auto, 175K) is making, and after a test drive and a little poking around with it in the air it appears to be in the transmission. Becoming audible from inside the car above about 15 MPH, the only time the noise doesn't occur is when there's absolute slack in the drivetrain - even when slowing down it's there, but slightly quieter than when sustaining speed or accelerating. It's not a whir or whine, like a wheel bearing, and not a defined bang or pop - more like an oscillating scrubbing sound that has a rhythm to it, directly related to ground speed; however, it's not related to wheel speed because when I had it in the air, idling in drive (speedo was reading around 20) and rubbed a board on one tire slowing one wheel the noise didn't change in relation to that, only with the difference in engine speed. Which makes me think it's in the final drive portion of the transmission. But after some googling I don't see any mention of a similar, common problem with these vehicles.

Thoughts? I'm inclined to recommend against any maintenance to try to "save" the transmission, because new fluid ain't gonna help worn or banged up final drive gears, and just drive it 'til it gets worse or fails then rebuild/replace.


To quote a friend, "Synthetics, man."

'85 GMC C3500, 454, 132K
'82 Mercedes 300CD, OM617 turbo, 173K (totaled 2018, in rehab)
'85 Mercedes 300TD, OM617 turbo, 217K (wife's)
'67 Suburban, 350, 331K
Re: '11 Sportage transmission "scrubbing" noise [Re: Alex_V] #4484829
08/10/17 01:41 PM
08/10/17 01:41 PM
Joined: Jan 2008
Posts: 10,972
OH
SatinSilver Offline
SatinSilver  Offline
Joined: Jan 2008
Posts: 10,972
OH
Does it have an atf dipstick, and if so what color is the fluid? Hopefully it's been changed a few times over the 175k miles. Prob needs a new trans would be my guess. It would be nice to drop the pan and change the filter. No flushes. Funny/weird trans issues have been solved with a simple drain and fill. It's worth doing a little maintenance to see if an issue goes away. Esp ones that cost less than $100. Napa prob has a decent filter in stock. If that doesn't solve it I'd stop there and not continue doing maintenance type stuff to it.

Last edited by SatinSilver; 08/10/17 01:43 PM.
Re: '11 Sportage transmission "scrubbing" noise [Re: SatinSilver] #4484835
08/10/17 01:50 PM
08/10/17 01:50 PM
Joined: Jun 2017
Posts: 620
DFW
JustN89 Offline
JustN89  Offline
Joined: Jun 2017
Posts: 620
DFW
Originally Posted By: SatinSilver
Does it have an atf dipstick, and if so what color is the fluid? Hopefully it's been changed a few times over the 175k miles. Prob needs a new trans would be my guess. It would be nice to drop the pan and change the filter. No flushes. Funny/weird trans issues have been solved with a simple drain and fill. It's worth doing a little maintenance to see if an issue goes away. Esp ones that cost less than $100. Napa prob has a decent filter in stock. If that doesn't solve it I'd stop there and not continue doing maintenance type stuff to it.

Pretty sure that is a sealed unit with an internal filter. I'd still do a drain and fill on it though. Not terribly difficult and Kia ATF is pretty cheap.

Re: '11 Sportage transmission "scrubbing" noise [Re: Alex_V] #4484846
08/10/17 02:11 PM
08/10/17 02:11 PM
Joined: Oct 2014
Posts: 1,078
SW Ontario Canada
KGMtech Offline
KGMtech  Offline
Joined: Oct 2014
Posts: 1,078
SW Ontario Canada
Are the bolts holding the flex plate tight to the TC? I saw this issue on YT - it was a Korean car IIRC.


2017.5 Nissan Rogue SV FWD
2013 Nissan Maxima SV
2009 Ford Flex SEL FWD
1984 Yamaha XJ750RL
Re: '11 Sportage transmission "scrubbing" noise [Re: KGMtech] #4485145
08/10/17 07:51 PM
08/10/17 07:51 PM
Joined: Sep 2004
Posts: 7,833
Marshfield , MA
andyd Offline
andyd  Offline
Joined: Sep 2004
Posts: 7,833
Marshfield , MA
Originally Posted By: KGMtech
Are the bolts holding the flex plate tight to the TC? I saw this issue on YT - it was a Korean car IIRC.
Complete wild guess. Maybe a cracked flex plate?


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: '11 Sportage transmission "scrubbing" noise [Re: Alex_V] #4485191
08/10/17 08:46 PM
08/10/17 08:46 PM
Joined: Feb 2013
Posts: 11,100
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 11,100
Phoenix, AZ
I'd put the front up on jack stands, turn off traction control, and have someone "drive" it and crawl underneath and listen.


2015 Hyundai Sonata 2.4L 89k Motorcraft Synthetic Blend 5w30 & OEM
2000 Toyota Camry 2.2L 231k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: '11 Sportage transmission "scrubbing" noise [Re: Alex_V] #4485195
08/10/17 08:58 PM
08/10/17 08:58 PM
Joined: Aug 2013
Posts: 2,662
Central Maryland
HangFire Offline
HangFire  Offline
Joined: Aug 2013
Posts: 2,662
Central Maryland
Originally Posted By: Alex_V
It's not a whir or whine, like a wheel bearing, and not a defined bang or pop - more like an oscillating scrubbing sound that has a rhythm to it, directly related to ground speed; however, it's not related to wheel speed because when I had it in the air, idling in drive (speedo was reading around 20)

Originally Posted By: Nick1994
I'd put the front up on jack stands, turn off traction control, and have someone "drive" it and crawl underneath and listen.


Various musings: http://hangfire.net
Re: '11 Sportage transmission "scrubbing" noise [Re: HangFire] #4485212
08/10/17 09:27 PM
08/10/17 09:27 PM
Joined: Feb 2013
Posts: 11,100
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 11,100
Phoenix, AZ
Originally Posted By: HangFire
Originally Posted By: Alex_V
It's not a whir or whine, like a wheel bearing, and not a defined bang or pop - more like an oscillating scrubbing sound that has a rhythm to it, directly related to ground speed; however, it's not related to wheel speed because when I had it in the air, idling in drive (speedo was reading around 20)

Originally Posted By: Nick1994
I'd put the front up on jack stands, turn off traction control, and have someone "drive" it and crawl underneath and listen.
duh I'm an idiot


2015 Hyundai Sonata 2.4L 89k Motorcraft Synthetic Blend 5w30 & OEM
2000 Toyota Camry 2.2L 231k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: '11 Sportage transmission "scrubbing" noise [Re: Alex_V] #4485350
08/11/17 05:06 AM
08/11/17 05:06 AM
Joined: Apr 2016
Posts: 1,198
Campbellsville, KY
Alex_V Offline OP
Alex_V  Offline OP
Joined: Apr 2016
Posts: 1,198
Campbellsville, KY
I ruled out something on the engine side of the transmission because the frequency of the noise corresponds to ground speed, not engine speed - but not to the speed of one wheel or another, which would indicate it's in the final drive before the spider gears/axle shafts.

I believe this unit is intended to be non-serviceable, but I'll see what a drain/fill would cost.


To quote a friend, "Synthetics, man."

'85 GMC C3500, 454, 132K
'82 Mercedes 300CD, OM617 turbo, 173K (totaled 2018, in rehab)
'85 Mercedes 300TD, OM617 turbo, 217K (wife's)
'67 Suburban, 350, 331K
Re: '11 Sportage transmission "scrubbing" noise [Re: Alex_V] #4485382
08/11/17 06:07 AM
08/11/17 06:07 AM
Joined: Jun 2017
Posts: 620
DFW
JustN89 Offline
JustN89  Offline
Joined: Jun 2017
Posts: 620
DFW
Originally Posted By: Alex_V
I ruled out something on the engine side of the transmission because the frequency of the noise corresponds to ground speed, not engine speed - but not to the speed of one wheel or another, which would indicate it's in the final drive before the spider gears/axle shafts.

I believe this unit is intended to be non-serviceable, but I'll see what a drain/fill would cost.

Dealer averages seem to be in the $150 range (at least near my location, YMMV). Indie shops seem to be around the $85-100 range. Or you can do it yourself:

1) Remove undercarriage panel

2) Remove fill plug (do this first- you don't want to drain fluid and find that you cannot remove fill plug)

3) Drain fluid through drain plug (I believe it requires a 24mm socket, or your 3/8" socket wrench will fit perfectly inside without an attachment)

4) Reinstall drain plug and remove level check plug

5) With a catch pan underneath, fill transmission with ATF using a long funnel (preferably a 12" funnel). When transmission level is correct, a thin stream will come out of level check hole.

6) Start car and let it idle for about 15 minutes. Once done, shift through gears.

7) Add fluid until a thin stream comes out of level check plug.

8) Reinstall level check plug and fill plug.

Note: The car must be level in order to get accurate level checks.

There are also plenty of youtube videos out there covering this that will give better step by step directions than I have. It's pretty straight forward though. Once you get the hang of it, it goes pretty quick and now you can perform another bit of preventative maintenance on your vehicle.

Re: '11 Sportage transmission "scrubbing" noise [Re: JustN89] #4485383
08/11/17 06:09 AM
08/11/17 06:09 AM
Joined: Jun 2017
Posts: 620
DFW
JustN89 Offline
JustN89  Offline
Joined: Jun 2017
Posts: 620
DFW
Originally Posted By: Alex_V
I ruled out something on the engine side of the transmission because the frequency of the noise corresponds to ground speed, not engine speed - but not to the speed of one wheel or another, which would indicate it's in the final drive before the spider gears/axle shafts.

I believe this unit is intended to be non-serviceable, but I'll see what a drain/fill would cost.


Dealer averages seem to be in the $150 range (at least near my location, YMMV). Indie shops seem to be around the $85-100 range. Or you can do it yourself:

1) Remove undercarriage panel

2) Remove fill plug. Do this first- you don't want to drain fluid and find that you cannot remove fill plug. (I believe this is a 22mm socket, but a 3/8" extension will fit in the center of the plug)

3) Drain fluid through drain plug. (I believe it requires a 24mm socket, or your 3/8" socket wrench will fit perfectly inside without an attachment)

4) Reinstall drain plug and remove level check plug

5) With a catch pan underneath, fill transmission with ATF using a long funnel (preferably a 12" funnel). When transmission level is correct, a thin stream will come out of level check hole.

6) Start car and let it idle for about 15 minutes. Once done, shift through gears.

7) Add fluid until a thin stream comes out of level check plug.

8) Reinstall level check plug and fill plug.

Note: The car must be level in order to get accurate level checks.

There are also plenty of youtube videos out there covering this that will give better step by step directions than I have. Also important, the fill plug is plastic so don't over-torque it. It's pretty straight forward though. Once you get the hang of it, it goes pretty quick and now you can perform another bit of preventative maintenance on your vehicle.

Re: '11 Sportage transmission "scrubbing" noise [Re: Alex_V] #4485744
08/11/17 12:26 PM
08/11/17 12:26 PM
Joined: Apr 2016
Posts: 1,198
Campbellsville, KY
Alex_V Offline OP
Alex_V  Offline OP
Joined: Apr 2016
Posts: 1,198
Campbellsville, KY
I would be doing it myself... because I'm the mechanic.


To quote a friend, "Synthetics, man."

'85 GMC C3500, 454, 132K
'82 Mercedes 300CD, OM617 turbo, 173K (totaled 2018, in rehab)
'85 Mercedes 300TD, OM617 turbo, 217K (wife's)
'67 Suburban, 350, 331K

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