HELP...Drive Shaft/Rear Tire Shutter - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

UM FRS · 08-22-2012, 12:52 PM

I have approximately 1200kms on my FR-S now and yesterday morning as I was backing up out of the driveway I felt my drivers side rear tire/driveshaft shutter a bit. It's hard to describe but it was almost a chunky, notchy feeling. There were no audible sounds. When I drove away it was fine. Later in the day i felt it again, but only when turning right. After a while driving, it goes away. Last night I did some research and didn't really find anything. Again this morning as I went out for a drive, whenever I was at a stop and turning right, as I would take off into the turn, I could feel the notchyness. It's isolated to the drivers side rear and feels like the driveshaft/tire? I'm thinking it's when a load is applied to that area. And as I continue driving, and the car warms up, I don't feel it anymore. I was wondering if anyone could assist in diagnosing this. My concern is that it might get worse.

Thanks in advance,

simpleisbest · 08-22-2012, 01:00 PM

Does it only occur when you turn right?
Have you hit any potholes or anything like that lately?

dsgerbc · 08-22-2012, 01:10 PM

Try giving it less gas. I'm think you're feeling your TorSen working. Might be more sensitive when cold.

Hanzo · 08-22-2012, 01:20 PM

^^^ I agree, it's the LSD you are feeling. I get that in the morning before the car warm up as well.

Roadstercycle · 08-22-2012, 01:41 PM

Yes, that's what it is, I get it too until warmed up. It's the Positraction that feels like ratcheting. No worries yet.

Sideways? · 08-23-2012, 08:40 AM

Glad to know it is not just me that feels this and it is nothing too much to worry about :-)

jm1681 · 08-24-2012, 09:14 AM

I was feeling this too and immediately wrote it off as diff

It's a little disconcerting at times, but it's SO brief, I'm like, "Oh crap what's-" and then before I can even get into full-fledged panic mode, it's completely gone.

hyper4mance · 09-04-2012, 11:15 AM

Ah I get this as well and didn't really think about when it occurs until I read this thread. I get it when starting out ~1k-1500 rpm in 1st on a turn, implying its LSD. Haven't paid attention if it happens after the car warms up more.

DGM BRZ · 09-04-2012, 10:45 PM

I have the same experience. I thought at first it might be traction control, but since it happens under low power, I am sure it is the diff. I hope it is not causing any undue wear and tear.

Sony · 09-05-2012, 12:11 AM

As said before, it's the diff, My truck has a LSD as well and it does the same thing around corners. You may get a little wheel chirp as well around corners, once the oil warms up you should be fine.

OmarGC · 09-05-2012, 01:29 AM

I'm lol'ing at all these LSD threads in this sub-forum

davisk6 · 09-05-2012, 11:14 AM

Quote:

Originally Posted by OmarGC

I'm lol'ing at all these LSD threads in this sub-forum

I know. Wait until a few folks upgrade to a KAAZ, Cusco or Tomei 2 way....

08-22-2012, 12:52 PM	#1
UM FRS Member Join Date: Jul 2012 Drives: UltraMarine Scion FR-S Location: Ontario Posts: 48 Thanks: 0 Thanked 8 Times in 5 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	HELP...Drive Shaft/Rear Tire Shutter I have approximately 1200kms on my FR-S now and yesterday morning as I was backing up out of the driveway I felt my drivers side rear tire/driveshaft shutter a bit. It's hard to describe but it was almost a chunky, notchy feeling. There were no audible sounds. When I drove away it was fine. Later in the day i felt it again, but only when turning right. After a while driving, it goes away. Last night I did some research and didn't really find anything. Again this morning as I went out for a drive, whenever I was at a stop and turning right, as I would take off into the turn, I could feel the notchyness. It's isolated to the drivers side rear and feels like the driveshaft/tire? I'm thinking it's when a load is applied to that area. And as I continue driving, and the car warms up, I don't feel it anymore. I was wondering if anyone could assist in diagnosing this. My concern is that it might get worse. Thanks in advance,

09-05-2012, 12:11 AM	#10
Sony Senior Member Join Date: Jul 2011 Drives: 2013 Subaru BRZ MT Limited Location: Somerville, MA Posts: 805 Thanks: 20 Thanked 463 Times in 200 Posts Mentioned: 25 Post(s) Tagged: 0 Thread(s)	As said before, it's the diff, My truck has a LSD as well and it does the same thing around corners. You may get a little wheel chirp as well around corners, once the oil warms up you should be fine. __________________ Dark Blue 2020 Subaru Forester Sport, Name: Apollo - God of Music WRB 2013 Subaru BRZ Limited MT, Name: Zeus - Father of all God's and God of Sky and Thunder Perrin Cat-Back, ECUTek Tune by Kaizen Tuning, Perrin Silicone Radiator Hoses, Perrin Master Cylinder Brace, Perrin True Cold Air Intake

09-05-2012, 01:29 AM	#11
OmarGC My FR-S has 5 gears Join Date: Aug 2012 Drives: FRS/280z/Tundra Location: St. Louis Posts: 1,994 Thanks: 626 Thanked 1,065 Times in 572 Posts Mentioned: 49 Post(s) Tagged: 3 Thread(s)	I'm lol'ing at all these LSD threads in this sub-forum __________________ Omar GC 2JZ - 6870 - stock block - 1000whp? Instagram: 2jzus

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08-22-2012, 01:00 PM	#2
simpleisbest Senior Citizen Join Date: May 2012 Drives: Scion FR-S Location: So. Cal Posts: 571 Thanks: 143 Thanked 186 Times in 121 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	Does it only occur when you turn right? Have you hit any potholes or anything like that lately?

08-22-2012, 01:10 PM	#3
dsgerbc Senior Member Join Date: Jan 2012 Drives: BRZ(sold), STI Location: A2, MI Posts: 1,915 Thanks: 176 Thanked 419 Times in 241 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	Try giving it less gas. I'm think you're feeling your TorSen working. Might be more sensitive when cold.

08-22-2012, 01:20 PM	#4
Hanzo Senior Member Join Date: Dec 2011 Drives: Waiting for the ND Miata Location: VA Posts: 963 Thanks: 182 Thanked 656 Times in 194 Posts Mentioned: 11 Post(s) Tagged: 12 Thread(s)	^^^ I agree, it's the LSD you are feeling. I get that in the morning before the car warm up as well.

08-22-2012, 01:41 PM	#5
Roadstercycle FRS Rear Mount Turbo Join Date: May 2012 Drives: 2013 FR-S Raven, Rear Turbo Location: Torrance, Ca Posts: 193 Thanks: 53 Thanked 113 Times in 49 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Yes, that's what it is, I get it too until warmed up. It's the Positraction that feels like ratcheting. No worries yet.

08-24-2012, 09:14 AM	#7
jm1681 Senior Member Join Date: Jul 2012 Drives: MKVI VW GTI Location: Suffern, NY Posts: 344 Thanks: 156 Thanked 38 Times in 32 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I was feeling this too and immediately wrote it off as diff It's a little disconcerting at times, but it's SO brief, I'm like, "Oh crap what's-" and then before I can even get into full-fledged panic mode, it's completely gone.

09-04-2012, 10:45 PM	#9
DGM BRZ BRZ Member Join Date: Mar 2012 Drives: 2013 DGM BRZ Limited Location: Pittsburgh Posts: 7 Thanks: 0 Thanked 2 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I have the same experience. I thought at first it might be traction control, but since it happens under low power, I am sure it is the diff. I hope it is not causing any undue wear and tear.

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