rear suspension clunk - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Gen · 10-10-2012, 02:14 AM

I have about 4500 miles on the car and have developed a slight clunk in the rear suspension. Anyone notice a similar issue?

akustique · 10-10-2012, 04:22 PM

I hear the same clunk on mine. Is that normal?

Subforever · 10-10-2012, 08:04 PM

I have similar sound from rear left corner. First thing to check is the poorly installed jack back there. In my case it was loose far from snug anyway so the jack jump in his enclosure and hit the cardboard and make the pok pok

brz7400 · 12-18-2012, 05:31 PM

Guess I have the rear deck rattle, but there also seems to be a separate passenger-rear suspension clunking type of sounds when going over dots.
Anybody figure out the source of the suspension clunking, other than a loose jack on driver side?
Mine almost sounds like a spring or shock clunking/rattling.

Sigh-on-Rice · 12-18-2012, 05:49 PM

Quote:

Originally Posted by brz7400

Guess I have the rear deck rattle, but there also seems to be a separate passenger-rear suspension clunking type of sounds when going over dots.
Anybody figure out the source of the suspension clunking, other than a loose jack on driver side?
Mine almost sounds like a spring or shock clunking/rattling.

What do you mean by "dots"?

I hear a single pop/knocking noise from the driver side rear when going over a speed bump or a drive way in an angle. It seems to be louder when going left first. It's easy to reproduce the noise in a parking lot with speed bumps. I'm suspecting it's the rear deck making this noise. But it could be described as suspension clunk noise. I'm pretty sure mine is not the suspension because I can reproduce this noise at 2 mph and when the rear tires are not going over any type of bumps. I was just wondering if yours might be the rear deck too.

brz7400 · 12-19-2012, 05:31 PM

Quote:

Originally Posted by Sigh-on-Rice

What do you mean by "dots"?

those yellow dome like things they put in parking lots to rattle the car when you go over them.

Sigh-on-Rice · 12-19-2012, 07:03 PM

Quote:

Originally Posted by brz7400

those yellow dome like things they put in parking lots to rattle the car when you go over them.

I see. You and I are hearing a different noise then. That won't be enough of a body flex to make the noise I'm hearing.

Cameronghanson · 12-19-2012, 10:09 PM

I hear the same thing. I talked to some subie techs and they all said its because its an LSD. The LSD can be kind noisy especially when you are turning, under torque load, etc

Turdinator · 12-19-2012, 10:28 PM

Quote:

Originally Posted by Cameronghanson

I hear the same thing. I talked to some subie techs and they all said its because its an open diff. The open diff can be kind noisy especially when you are turning, under torque load, etc

They have an LSD not an open diff and the sound they make on slow tight turn is more like scrubbing judder if that makes sense. Not a clunk or nock.

Cameronghanson · 12-22-2012, 12:30 PM

Quote:

Originally Posted by Turdinator

They have an LSD not an open diff and the sound they make on slow tight turn is more like scrubbing judder if that makes sense. Not a clunk or nock.

LSD is what i meant. I had my car in the shop for 3 weeks trying to find this noise. Plus they were able to reproduce it again and again with the clunk. Guess if all else fails everyone can get all the aftermarket braces struts and suspension components and see if that fixes it.

dori. · 12-23-2012, 08:05 AM

Quote:

Originally Posted by Sigh-on-Rice

What do you mean by "dots"?

I hear a single pop/knocking noise from the driver side rear when going over a speed bump or a drive way in an angle. It seems to be louder when going left first. It's easy to reproduce the noise in a parking lot with speed bumps. I'm suspecting it's the rear deck making this noise. But it could be described as suspension clunk noise. I'm pretty sure mine is not the suspension because I can reproduce this noise at 2 mph and when the rear tires are not going over any type of bumps. I was just wondering if yours might be the rear deck too.

sounds like the effect of the torsen, if you were slightly lifting a wheel

#87 · 12-23-2012, 08:57 AM

I get driver side clunk over certain bumps. It is definitely not the lsd. Ive just been living with it, don't notice any adverse effects from it. Would be interested if someone found the cause though.

BigFatFlip · 12-23-2012, 09:25 AM

I've noticed a similar sound, but only in the morning while backing up from my driveway. I believe its what is described in the TSB sticky section (Popping Sound from Trunk / Rear Shelf Area). Did the fix desribed (lubing the panel joints, etc.) and it seemed to have worked.

Sigh-on-Rice · 12-23-2012, 07:01 PM

Quote:

Originally Posted by dori.

sounds like the effect of the torsen, if you were slightly lifting a wheel

Interesting to know that torsen makes a popping sound. But I can reproduce the noise while in neutral too.

Quote:

Originally Posted by BigFatFlip

I've noticed a similar sound, but only in the morning while backing up from my driveway. I believe its what is described in the TSB sticky section (Popping Sound from Trunk / Rear Shelf Area). Did the fix desribed (lubing the panel joints, etc.) and it seemed to have worked.

Did you do both of the fixes? One is in the trunk and another one is from the rear seat removing the rear deck panel.

10-10-2012, 02:14 AM	#1
Gen Senior Member Join Date: Jun 2012 Drives: Scion FR-S Location: Under a rock Posts: 1,060 Thanks: 75 Thanked 552 Times in 270 Posts Mentioned: 39 Post(s) Tagged: 0 Thread(s)	rear suspension clunk I have about 4500 miles on the car and have developed a slight clunk in the rear suspension. Anyone notice a similar issue?

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10-10-2012, 04:22 PM	#2
akustique Junior Member Join Date: Oct 2012 Drives: nice Location: Los Angeles Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I hear the same clunk on mine. Is that normal?

10-10-2012, 08:04 PM	#3
Subforever Member Join Date: Jun 2012 Drives: SWP BRZ Location: Belle Province Posts: 67 Thanks: 9 Thanked 14 Times in 11 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I have similar sound from rear left corner. First thing to check is the poorly installed jack back there. In my case it was loose far from snug anyway so the jack jump in his enclosure and hit the cardboard and make the pok pok

12-18-2012, 05:31 PM	#4
brz7400 Senior Member Join Date: Jun 2012 Drives: Subaru BRZ Location: Los Angeles, CA Posts: 138 Thanks: 84 Thanked 30 Times in 22 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Guess I have the rear deck rattle, but there also seems to be a separate passenger-rear suspension clunking type of sounds when going over dots. Anybody figure out the source of the suspension clunking, other than a loose jack on driver side? Mine almost sounds like a spring or shock clunking/rattling.

12-19-2012, 10:09 PM	#8
Cameronghanson Senior Member Join Date: Jun 2012 Drives: n/a Location: Boston Posts: 558 Thanks: 215 Thanked 126 Times in 94 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	I hear the same thing. I talked to some subie techs and they all said its because its an LSD. The LSD can be kind noisy especially when you are turning, under torque load, etc Last edited by Cameronghanson; 12-22-2012 at 12:31 PM.

12-23-2012, 08:57 AM	#12
#87 I usually post drunk Join Date: Oct 2009 Drives: BRZ Location: NY Posts: 1,487 Thanks: 15 Thanked 490 Times in 231 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I get driver side clunk over certain bumps. It is definitely not the lsd. Ive just been living with it, don't notice any adverse effects from it. Would be interested if someone found the cause though.

12-23-2012, 09:25 AM	#13
BigFatFlip sleep, drive, eat, repeat Join Date: Mar 2012 Drives: '13 BRZ, '12 Outback Location: Sack of Potatoes Posts: 4,431 Thanks: 2,630 Thanked 3,797 Times in 1,981 Posts Mentioned: 188 Post(s) Tagged: 4 Thread(s)	I've noticed a similar sound, but only in the morning while backing up from my driveway. I believe its what is described in the TSB sticky section (Popping Sound from Trunk / Rear Shelf Area). Did the fix desribed (lubing the panel joints, etc.) and it seemed to have worked.

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