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Grinding noise from under the car


Defiant
Definitely? Defiantly? wat
136/1000


Galant VR-4 org Post #: 1240486 posted 11/13/17 07:41 PM     Remind Me!  Send Private Message   Edit Post      
My Galant has this really loud grinding noise coming from under the car, almost sounds like a bad bearing.

I recorded a video, you can defiantly hear the noise I'm referring too.
click

The driveshaft was recently rebuilt.



136/1000


Edited by Defiant (11/13/17 07:42 PM)

Posts: 164 | From: Houston, TX | Member Since: 09/07/12 | IP: (2601:2c1:8201:78) | Report this post to a Moderator

thomcasey
I ain't no puny human
1025/2000


Galant VR-4 org Post #: 1240494 posted 11/14/17 11:59 AM     Remind Me!  Send Private Message   Edit Post      
Is it possible that part of the exhaust is contacting the driveshaft?



Thom
1991 GVR-4 1025/2000 (PTE 1200's, 16g, DSMLink v3, gm-maf, eagle/ross, .020 over, 272's)
1992 GVR-4 866/1000. Ready for all of the above.
1992 GVR-4 148/1000. Rescue

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Defiant
Definitely? Defiantly? wat
136/1000


Galant VR-4 org Post #: 1240496 posted 11/14/17 12:40 PM     Remind Me!  Send Private Message   Edit Post      
I checked that, and everything is clear.

The sound gets louder the faster I go, but doesn't change when hitting bumps or anything.

Going to check the Tcase this weekend.



136/1000

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Defiant
Definitely? Defiantly? wat
136/1000


Galant VR-4 org Post #: 1240644 posted 11/26/17 11:52 AM     Remind Me!  Send Private Message   Edit Post      
The driveshaft makes a clunking sound.
click



136/1000

Posts: 164 | From: Houston, TX | Member Since: 09/07/12 | IP: (2601:2c1:8201:78) | Report this post to a Moderator

Defiant
Definitely? Defiantly? wat
136/1000


Galant VR-4 org Post #: 1240834 posted 12/07/17 06:07 AM     Remind Me!  Send Private Message   Edit Post      
Any feedback on the driveshaft noise??



136/1000

Posts: 164 | From: Houston, TX | Member Since: 09/07/12 | IP: (204.58.246.49) | Report this post to a Moderator

thomcasey
I ain't no puny human
1025/2000


Galant VR-4 org Post #: 1240836 posted 12/07/17 07:28 AM     Remind Me!  Send Private Message   Edit Post      
How is your lobro joint?



Thom
1991 GVR-4 1025/2000 (PTE 1200's, 16g, DSMLink v3, gm-maf, eagle/ross, .020 over, 272's)
1992 GVR-4 866/1000. Ready for all of the above.
1992 GVR-4 148/1000. Rescue

Posts: 762 | From: Indianapolis, IN | Member Since: 09/24/14 | IP: (68.45.230.24) | Report this post to a Moderator

Defiant
Definitely? Defiantly? wat
136/1000


Galant VR-4 org Post #: 1240847 posted 12/07/17 11:43 AM     Remind Me!  Send Private Message   Edit Post      
How do you tell if its bad by visual inspection?

That may be the cause of this vibrating noise while using the engine to decelerate.



136/1000

Posts: 164 | From: Houston, TX | Member Since: 09/07/12 | IP: (204.58.246.49) | Report this post to a Moderator

thomcasey
I ain't no puny human
1025/2000


Galant VR-4 org Post #: 1240849 posted 12/07/17 12:28 PM     Remind Me!  Send Private Message   Edit Post      
Look at the shaft where it goes into the joint. See if there is extra movement. Also look for tears in the boot. These things dry out and it gets expensive. It is there to allow the drivetrain to move, the lobro allows the DS to have some stretch,



Thom
1991 GVR-4 1025/2000 (PTE 1200's, 16g, DSMLink v3, gm-maf, eagle/ross, .020 over, 272's)
1992 GVR-4 866/1000. Ready for all of the above.
1992 GVR-4 148/1000. Rescue

Posts: 762 | From: Indianapolis, IN | Member Since: 09/24/14 | IP: (68.45.230.24) | Report this post to a Moderator

Defiant
Definitely? Defiantly? wat
136/1000


Galant VR-4 org Post #: 1241635 posted 02/15/18 06:55 AM     Remind Me!  Send Private Message   Edit Post      
Lobro doesn't have any extra movement.

Still trying to figure this out



136/1000

Posts: 164 | From: Houston, TX | Member Since: 09/07/12 | IP: (204.58.246.49) | Report this post to a Moderator

Dan D
220, 221... whatever it takes
410/2000


Galant VR-4 org Post #: 1241636 posted 02/15/18 07:59 AM     Remind Me!  Send Private Message   Edit Post      
I had similar. Thought it was a bad wheel bearing (which was getting a little bad). When that didn't fix it, the only other rotating part I've not reworked at some point was the driver side axle jackshaft bearing - the part bolted to the back of the block. Similar grinding noise. I'd pulled it before while diagnosis the noise and it didn't feel or sound bad spinning it by hand so I left it alone but apparently it was. Made my noise go away.

It's pretty easy to replace. Could probably press it with a rental c-clamp press no problem. Hydraulic press - easy.




#410/2k


Edited by Dan D (02/15/18 08:00 AM)

Posts: 1147 | From: Brownsburg, IN | Member Since: 02/27/01 | IP: (2601:805:c700:2e) | Report this post to a Moderator

Defiant
Definitely? Defiantly? wat
136/1000


Galant VR-4 org Post #: 1241691 posted 02/20/18 03:33 PM     Remind Me!  Send Private Message   Edit Post      
I was able to record a better video showing the sound. I'm doing about 65mph and the noise is very apparent in the video.

https://youtu.be/CisT_3aRU_w



136/1000


Edited by Defiant (02/20/18 03:40 PM)

Posts: 164 | From: Houston, TX | Member Since: 09/07/12 | IP: (2600:1:c6f2:559f) | Report this post to a Moderator

thomcasey
I ain't no puny human
1025/2000


Galant VR-4 org Post #: 1241693 posted 02/20/18 06:18 PM     Remind Me!  Send Private Message   Edit Post      
have you checked the half-shaft bearing for noise or play?



Thom
1991 GVR-4 1025/2000 (PTE 1200's, 16g, DSMLink v3, gm-maf, eagle/ross, .020 over, 272's)
1992 GVR-4 866/1000. Ready for all of the above.
1992 GVR-4 148/1000. Rescue

Posts: 762 | From: Indianapolis, IN | Member Since: 09/24/14 | IP: (2601:803:c402:59) | Report this post to a Moderator

fuel
"Just to be pedantic!"


Galant VR-4 org Post #: 1241697 posted 02/21/18 08:10 AM     Remind Me!  Send Private Message   Edit Post      
I have the same noise, and it's been like that for the last ~10,000kms and hasn't got worse (or better). It just seemed to start one day out of the blue. The noise on mine seems to come from more towards the rear of the car. I also get a horrible shudder when going downhill and letting off the gas in higher gears.

I've been collecting parts like wheel bearings, driveshaft carrier bearings, UJ joints etc and will start replacing items one by one and see when the noise goes away. It could also be the rear diff (or AWS pump for that matter).



'91 E39A Galant VR-4 Evolution | '80 A164A Eterna GSR Turbo

-- Visit my JDM Galant VR-4 info & specifications site here! --

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Defiant
Definitely? Defiantly? wat
136/1000


Galant VR-4 org Post #: 1241706 posted 02/21/18 08:05 PM     Remind Me!  Send Private Message   Edit Post      
I dont get a shudder, but I do get this loud rattling sound when decelerating while in gear.



136/1000

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FlyingEagle Galant VR4.org Moderator
Eager Beaver


Galant VR-4 org Post #: 1241754 posted 02/24/18 11:40 AM     Remind Me!  Send Private Message   Edit Post      
Check the angle of all the shafts in relation to one another/start/end points. With shafts being out of the acceptable range, you can end up with oscillation type vibrations which depending upon the severity, will make wonderful cabin noises for you to enjoy.



C53A 1 of the ~1500

Posts: 1558 | From: THE Ottawa | Member Since: 03/05/05 | IP: (24.246.10.23) | Report this post to a Moderator

MellowVR4
5" too short
372/2000


Galant VR-4 org Post #: 1241756 posted 02/24/18 07:47 PM     Remind Me!  Send Private Message   Edit Post      
I would put the car on Jack stands and go through the gears and see if you get the same result.

Well and of course see if you can find the horrible noise that way. Just be careful and make sure your on somewhat of a level floor to set all four Jack stands up.



89 RAIDER V6 5speed
90 GALANT GSX SOLD
91 372/2000 making it pretty again
91 578/2000 sold
92 417/1000 DIED
87 4RUNNER LS400 SWAP SOLD:(


Edited by MellowVR4 (02/24/18 07:50 PM)

Posts: 1631 | From: Milwaukee, Wi | Member Since: 07/25/09 | IP: (2607:fb90:298:6e) | Report this post to a Moderator

Defiant
Definitely? Defiantly? wat
136/1000


Galant VR-4 org Post #: 1241759 posted 02/24/18 10:03 PM     Remind Me!  Send Private Message   Edit Post      
I tried that, but the car didnt make any noise while on jack stands.

I'm thinking maybe the noises are coming from the transmission. I'm currently on the hunt for a good replacement now.



136/1000

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MellowVR4
5" too short
372/2000


Galant VR-4 org Post #: 1241761 posted 02/25/18 09:32 AM     Remind Me!  Send Private Message   Edit Post      
If it doesn't make the noise on the stands then it's only when the wheels are on the ground. Have you drained your trans fluid to check for metallics?



89 RAIDER V6 5speed
90 GALANT GSX SOLD
91 372/2000 making it pretty again
91 578/2000 sold
92 417/1000 DIED
87 4RUNNER LS400 SWAP SOLD:(

Posts: 1631 | From: Milwaukee, Wi | Member Since: 07/25/09 | IP: (2607:fb90:298:6e) | Report this post to a Moderator

Dan D
220, 221... whatever it takes
410/2000


Galant VR-4 org Post #: 1241762 posted 02/25/18 09:48 AM     Remind Me!  Send Private Message   Edit Post      
Sounds really familiar. If it hasn't ever been replaced, I'd change this guy. Pretty cheap part. 1/2 hours worth of work. Like I said earlier. Didn't feel bad but it was. I also forgot to mention that all 4 in the air - I couldn't detect the noise with a stethoscope. Only did it when loaded on all fours.





#410/2k

Posts: 1147 | From: Brownsburg, IN | Member Since: 02/27/01 | IP: (2601:805:c700:2e) | Report this post to a Moderator

FlyingEagle Galant VR4.org Moderator
Eager Beaver


Galant VR-4 org Post #: 1241789 posted 02/27/18 09:16 PM     Remind Me!  Send Private Message   Edit Post   
If there were any shims between the driveshaft hanger bearing and the two points it bolts to, and they are now missing, you could have changed the driveshaft angles. If the noise was only there with a new driveshaft and it only makes the noise with the car loaded on the ground and rolling, then I would rule out the possibility of driveshaft imbalance ... interesting that you think it is the transmission. The transmission when meshed and rolling will usually exhibit noises without needing to be loaded to the ground and rolling, but not always.



C53A 1 of the ~1500

Posts: 1558 | From: THE Ottawa | Member Since: 03/05/05 | IP: (24.246.11.71) | Report this post to a Moderator


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