'Fluttering'/soft rattle at speed - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

YukiHachiRoku · 06-30-2012, 12:22 AM

Quote:

Originally Posted by Citified

I've heard a similar sound at speed. My first thought was that the sound was coming from the dash vents. It seemed to me that the intake for the cabin circulation system must be pointed forward and that air pressure at high speeds was causing the fans or diffusers to get overwhelmed and make noises in protest. I only hear the noise at 65-70+ mph, so it's definitely speed related.

just noticed this today, but it seems to happen more when I'm at WoT.... my buddy was in the car, we thought the sound was also coming from the top of the dash or in the vents as well.

We had the windows rolled up since I just washed the car and didn't want water to get all over the windows.... It was intriguing. It felt like vibration with air intake baffle thingy, idk it's weird thouoh...

could it be crankshaft or cams rattling?

no check engine light or anything though.

fistpoint · 06-30-2012, 03:54 AM

Skip to :54 in the video...is this what you are experiencing?

[ame="http://www.youtube.com/watch?v=rWZne5b2R3s"]Getting squirly in the FR-S - YouTube[/ame]

Getagrip · 06-30-2012, 05:04 AM

^^ Not the same thing. That noise and sensation in the video is chatter from extreme understeer.

Pierre · 07-01-2012, 10:18 PM

I have metallic sound so maybe not the same problem - coming form right rear and I am pretty sure that it is seat lock problem (seat is locked).

brz7400 · 07-02-2012, 02:05 AM

I noticed I can make the slight rattling sound if I pound on the trunk mat on the right rear corner.
I can also make a rattling sound if I knock on the bottom diffuser part.
They may be one and the same and sounds like the thing I hear randomly when driving at freeway speeds.
Now, can someone figure out what exactly it is? I don't have a second person to help make the noise while I listen. Did not have time to go under the rear diffuser to see what's rattling inside that thing...

hyper4mance · 07-02-2012, 01:37 PM

I can't see the vid posted since I'm at work, but I have the same issue. At first I thought it was just turbulent wind hitting the mirror then the body of the car, but it only happens on the right side.

Symbiont · 07-02-2012, 03:32 PM

Definitely only the right side for me, still happening. I'm going to take a look back there when it's on the lift at Injen next week.

ultra · 07-03-2012, 02:50 PM

I think I've got this too...spooky soft rattle sound from inside the dash at around or just over the speed limit. Seems only to happen under load though, not while coasting?

Re~Mix · 07-03-2012, 04:08 PM

I've been experiencing this as well. Seems like it is something inside the car but I can't be certain. Happens with seat up or down, etc.

Neurytic · 07-03-2012, 04:23 PM

I've had this from day 1 in late May. I believe it was the rear wheel wells. If you go examine them, you'll see how loose they are. There are holes for the plastic snap screws to go into but it was never provided. I suspect that after 70mph, the plastic (loose) wells start chattering due to the wind. Go ahead and get some of those plastic clips/screws and look them into place. This might take care of it. Personally, I havent done it but I will tomorrow. I'll update on the results.

Kimsey47 · 07-03-2012, 04:32 PM

Quote:

Originally Posted by Neurytic

I've had this from day 1 in late May. I believe it was the rear wheel wells. If you go examine them, you'll see how loose they are. There are holes for the plastic snap screws to go into but it was never provided. I suspect that after 70mph, the plastic (loose) wells start chattering due to the wind. Go ahead and get some of those plastic clips/screws and look them into place. This might take care of it. Personally, I havent done it but I will tomorrow. I'll update on the results.

I believe in another post it was stated that those holes are pre-drills for mud guards... Be interesting to know if the clips does prevent this noise from occuring though!

Symbiont · 07-03-2012, 09:24 PM

Mine is definitely near the right rear wheel, even not under load.

Alexis · 07-04-2012, 04:34 AM

I am also getting this, right rear at low highway speeds & above. Kind of a vibration, like something is loose and being buffeted by the increased airflow. Seems to be speed related and not just under acceleration. Haven't investigated it yet, got my BRZ a few days ago and wasn't able to take it out on the highway until today so I just noticed it. I'll post if I figure anything out. I have to go by the dealership Thursday so I'll ask them just in case they have some kind of idea or have had other complaints.

sdiver68 · 07-04-2012, 08:31 AM

Right rear interior noise for me. In my case, the front passenger seat was all the way back pressed against the rear seat. I moved it forward a little so it did not touch and presto, the noise was gone.

06-30-2012, 05:04 AM	#17
Getagrip Member Join Date: Mar 2012 Drives: SWP BRZ Location: Florida Posts: 72 Thanks: 14 Thanked 12 Times in 8 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	^^ Not the same thing. That noise and sensation in the video is chatter from extreme understeer. __________________ SWP BRZ

07-03-2012, 02:50 PM	#22
ultra Curious cat. Join Date: May 2012 Drives: 86 GT base M/T - Red Location: Dubai Posts: 775 Thanks: 840 Thanked 383 Times in 191 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	I think I've got this too...spooky soft rattle sound from inside the dash at around or just over the speed limit. Seems only to happen under load though, not while coasting? __________________ 2013 Toyota 86 GT M/T 2009 Renault Clio Sport R27 Team F1 Edition (sold) 1991 Mazda MX5 Miata (sold) 2007 Mitsubishi Evo 9 RS (sold) 2006 VW Golf R32 (sold)

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06-30-2012, 03:54 AM	#16
fistpoint Senior Member Join Date: Dec 2011 Drives: Supercharged Golf Cart Location: Estados Unitos Posts: 1,196 Thanks: 75 Thanked 364 Times in 206 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Skip to :54 in the video...is this what you are experiencing? [ame="http://www.youtube.com/watch?v=rWZne5b2R3s"]Getting squirly in the FR-S - YouTube[/ame]

07-01-2012, 10:18 PM	#18
Pierre Junior Member Join Date: Jul 2012 Drives: BRZ Location: MI Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I have metallic sound so maybe not the same problem - coming form right rear and I am pretty sure that it is seat lock problem (seat is locked).

07-02-2012, 02:05 AM	#19
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)	I noticed I can make the slight rattling sound if I pound on the trunk mat on the right rear corner. I can also make a rattling sound if I knock on the bottom diffuser part. They may be one and the same and sounds like the thing I hear randomly when driving at freeway speeds. Now, can someone figure out what exactly it is? I don't have a second person to help make the noise while I listen. Did not have time to go under the rear diffuser to see what's rattling inside that thing...

07-03-2012, 04:08 PM	#23
Re~Mix Senior Member Join Date: May 2012 Drives: 13' Scion FRS MT Location: San Francisco Bay Area Posts: 737 Thanks: 290 Thanked 333 Times in 191 Posts Mentioned: 7 Post(s) Tagged: 3 Thread(s)	I've been experiencing this as well. Seems like it is something inside the car but I can't be certain. Happens with seat up or down, etc.

07-03-2012, 04:23 PM	#24
Neurytic Member Join Date: Jan 2012 Drives: 2013 Asphalt FR-S Location: IE CA Posts: 87 Thanks: 14 Thanked 32 Times in 17 Posts Mentioned: 0 Post(s) Tagged: 1 Thread(s)	I've had this from day 1 in late May. I believe it was the rear wheel wells. If you go examine them, you'll see how loose they are. There are holes for the plastic snap screws to go into but it was never provided. I suspect that after 70mph, the plastic (loose) wells start chattering due to the wind. Go ahead and get some of those plastic clips/screws and look them into place. This might take care of it. Personally, I havent done it but I will tomorrow. I'll update on the results.

07-04-2012, 04:34 AM	#27
Alexis Member Join Date: Jul 2012 Drives: 2013 BRZ Limited Manual Gray Location: Eugene OR Posts: 37 Thanks: 1 Thanked 1 Time in 1 Post Mentioned: 5 Post(s) Tagged: 0 Thread(s)	I am also getting this, right rear at low highway speeds & above. Kind of a vibration, like something is loose and being buffeted by the increased airflow. Seems to be speed related and not just under acceleration. Haven't investigated it yet, got my BRZ a few days ago and wasn't able to take it out on the highway until today so I just noticed it. I'll post if I figure anything out. I have to go by the dealership Thursday so I'll ask them just in case they have some kind of idea or have had other complaints.

07-04-2012, 08:31 AM	#28
sdiver68 Senior Member Join Date: Jun 2012 Drives: 2013 BRZ Limited Location: St. Louis, MO Posts: 98 Thanks: 55 Thanked 37 Times in 16 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Right rear interior noise for me. In my case, the front passenger seat was all the way back pressed against the rear seat. I moved it forward a little so it did not touch and presto, the noise was gone.

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