rattling when braking - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Latiii · 09-17-2013, 08:47 AM

Hey I recently got my FRS like two months ago. As I was driving two weeks later my FRS when braking gives a rattling sound from the engine. The only way it does not rattle is if I brake while pressing the clutch. I took it to Toyota twice and they can't seem to find anything wrong or out of place. Has anyone experienced the same problem and found a solution? Please help.

nalc · 09-17-2013, 09:34 AM

I've found that my car makes a short rattle occasionally when I'm braking at low speeds (under 30mph, although I'm not sure if it's simply that it's not loud enough to hear at higher speeds) with the car in neutral and my foot off the clutch. It seems to always happen with my hand near or touching the shifter, but I'm not sure if that's just because I usually have my hand there when I'm in that situation, or if my hand is causing it.

I find the car makes a quick jackhammer noise (not super loud, but noticeable) for about 4 times, then is quiet.

No idea what it is, does this sound like what you notice?

Wo6M · 09-17-2013, 10:17 AM

I get the same rattle but I believe its the direct injectors functioning normally. Although I'm not completely sure so anyone feel free to chime in...

King Tut · 09-17-2013, 10:52 AM

Quote:

Originally Posted by Latiii

Hey I recently got my FRS like two months ago. As I was driving two weeks later my FRS when braking gives a rattling sound from the engine. The only way it does not rattle is if I brake while pressing the clutch. I took it to Toyota twice and they can't seem to find anything wrong or out of place. Has anyone experienced the same problem and found a solution? Please help.

Is this your first manual transmission car by chance?

Latiii · 09-17-2013, 04:36 PM

Quote:

Originally Posted by King Tut

Is this your first manual transmission car by chance?

no i have owned 4 manual cars and can drive manual very good but it happens when i am in neutral and braking. it happens when i am in gear and braking . RPM's are above stall limit so i doubt its because i am close to stalling.

Latiii · 09-17-2013, 04:38 PM

Quote:

Originally Posted by nalc

I've found that my car makes a short rattle occasionally when I'm braking at low speeds (under 30mph, although I'm not sure if it's simply that it's not loud enough to hear at higher speeds) with the car in neutral and my foot off the clutch. It seems to always happen with my hand near or touching the shifter, but I'm not sure if that's just because I usually have my hand there when I'm in that situation, or if my hand is causing it.

I find the car makes a quick jackhammer noise (not super loud, but noticeable) for about 4 times, then is quiet.

No idea what it is, does this sound like what you notice?

YES! exactly. the reason i ask is because i had another manual FRS and it did not make those noises. I also have a friend who has one and when i drive his, it doesn't make that sound.

Dezoris · 09-17-2013, 05:06 PM

The best thing to do with the situations is either dealer it or find another owner locally to compare.

King Tut · 09-18-2013, 09:23 AM

Quote:

Originally Posted by Latiii

RPM's are above stall limit so i doubt its because i am close to stalling.

That was going to be my guess. Does it do it at all speeds?

automatic · 09-18-2013, 10:42 AM

Mine does it too...but I cant seem to find the conditions to reproduce it so I havent bothered taking it into the dealer.

It happens when I'm slowing to a stop...so brake and then almost immediately clutching in.

Latiii · 09-18-2013, 06:33 PM

Quote:

Originally Posted by Dezoris

The best thing to do with the situations is either dealer it or find another owner locally to compare.

Dealer looked at it and heard the sound. They just cant seem to find it.

Latiii · 09-18-2013, 06:34 PM

Quote:

Originally Posted by King Tut

That was going to be my guess. Does it do it at all speeds?

It sounds when i am slowing down under 30 for a complete stop or just slowing under 30.

King Tut · 09-19-2013, 09:44 AM

My guess would be throwout bearing noise if the clutch changes the sound. It is probably RPM dependent and only does it at lower RPM levels. Do the same stop from 30 to 0 in 1st, 2nd, 3rd, and 4th gear and note any differences.

brzerk1 · 09-27-2013, 10:09 PM

My brz started doing it and has about 1400 miles on it. I've noticed that it seems to do it only with the AC on in nuetral, clutch doesn't seem to effect it.

Sent from my iPhone using Tapatalk

humfrz · 09-27-2013, 10:55 PM

It's my understanding that the clutch and the brakes share the same fluid reservoir. Since your rattling sound may be related to movement of the clutch, maybe the ABS system is making the noise and the clutch movement is interrupting it.

Is the clutch/brake fluid reservoir up to the full mark?

Maybe their is air in one or both systems?

If so, bleeding the systems may settle it down ....

humfrz

09-17-2013, 08:47 AM	#1
Latiii Member Join Date: May 2012 Drives: Currently I have a tC Location: Miami Posts: 47 Thanks: 96 Thanked 4 Times in 4 Posts Mentioned: 16 Post(s) Tagged: 3 Thread(s)	rattling when braking Hey I recently got my FRS like two months ago. As I was driving two weeks later my FRS when braking gives a rattling sound from the engine. The only way it does not rattle is if I brake while pressing the clutch. I took it to Toyota twice and they can't seem to find anything wrong or out of place. Has anyone experienced the same problem and found a solution? Please help.

09-17-2013, 09:34 AM	#2
nalc Senior Member Join Date: Apr 2013 Drives: 13 BRZ Limited 6MT GBS Location: Pennsylvania Posts: 415 Thanks: 181 Thanked 256 Times in 130 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	I've found that my car makes a short rattle occasionally when I'm braking at low speeds (under 30mph, although I'm not sure if it's simply that it's not loud enough to hear at higher speeds) with the car in neutral and my foot off the clutch. It seems to always happen with my hand near or touching the shifter, but I'm not sure if that's just because I usually have my hand there when I'm in that situation, or if my hand is causing it. I find the car makes a quick jackhammer noise (not super loud, but noticeable) for about 4 times, then is quiet. No idea what it is, does this sound like what you notice? __________________ *nalc How to make physical switches for your BRZ HU How to take apart your whole interior

09-17-2013, 10:17 AM	#3
Wo6M Keep Calm And Drift On~ Join Date: May 2013 Drives: Scion FR-S WhiteOut 6 Speed Manual Location: Boca Raton ,FL Posts: 268 Thanks: 202 Thanked 114 Times in 61 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	I get the same rattle but I believe its the direct injectors functioning normally. Although I'm not completely sure so anyone feel free to chime in... __________________ 2013 Scion FR-S White Out Six Speed Manual Name: Deava Mods:

09-17-2013, 05:06 PM	#7
Dezoris Senior Member Join Date: Aug 2012 Drives: FR-S Location: IL Posts: 2,857 Thanks: 519 Thanked 2,997 Times in 1,095 Posts Mentioned: 159 Post(s) Tagged: 1 Thread(s)	The best thing to do with the situations is either dealer it or find another owner locally to compare. __________________ SAVAGEGEESE

09-19-2013, 09:44 AM	#12
King Tut NASA SpecE30 Racer Join Date: May 2012 Drives: 2006 Honda S2000 Location: Gulf Breeze, FL Posts: 7,279 Thanks: 607 Thanked 5,759 Times in 3,055 Posts Mentioned: 274 Post(s) Tagged: 10 Thread(s)	My guess would be throwout bearing noise if the clutch changes the sound. It is probably RPM dependent and only does it at lower RPM levels. Do the same stop from 30 to 0 in 1st, 2nd, 3rd, and 4th gear and note any differences. __________________ - King Tut Street/Track Car: 2006 Honda S2000 TT3 \|\| Race Car: 1987 BMW 325is SpecE30 \|\| Tow Vehicle: 2014 RAM 1500 EcoDiesel Sold Cars: 2012 BMW M3 \|\| 2013 Subaru BRZ \|\| 2012 Porsche Cayman R \|\| 2009 Chevrolet Z06 \|\| 2009 BMW M3 \|\| 2004 BMW M3 \|\| 2004 Nissan 350Z

09-18-2013, 10:42 AM	#9
automatic Senior Member Join Date: May 2012 Drives: WRB BRZ Location: Richmond Hill, ON Posts: 164 Thanks: 4 Thanked 31 Times in 19 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Mine does it too...but I cant seem to find the conditions to reproduce it so I havent bothered taking it into the dealer. It happens when I'm slowing to a stop...so brake and then almost immediately clutching in.

09-27-2013, 10:09 PM	#13
brzerk1 Member Join Date: Aug 2013 Drives: SWP BRZ LIMITED Location: IOWA Posts: 65 Thanks: 17 Thanked 14 Times in 10 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	My brz started doing it and has about 1400 miles on it. I've noticed that it seems to do it only with the AC on in nuetral, clutch doesn't seem to effect it. Sent from my iPhone using Tapatalk

09-27-2013, 10:55 PM	#14
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 29,951 Thanks: 28,924 Thanked 31,999 Times in 16,486 Posts Mentioned: 709 Post(s) Tagged: 2 Thread(s)	It's my understanding that the clutch and the brakes share the same fluid reservoir. Since your rattling sound may be related to movement of the clutch, maybe the ABS system is making the noise and the clutch movement is interrupting it. Is the clutch/brake fluid reservoir up to the full mark? Maybe their is air in one or both systems? If so, bleeding the systems may settle it down .... humfrz

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