Metal scraping sound at idle - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

DaBoBo21 · 11-22-2017, 10:24 AM

Quote:

Originally Posted by brzzy

However it sounds like a deli machine being sharpened going down the road.

Does is sound like this?

Forgive my exhaust, if you listen carefully you'll hear the heatshield rattle.

[ame="https://www.youtube.com/watch?v=g7C5jONDjgo"]https://www.youtube.com/watch?v=g7C5jONDjgo[/ame]

brzzy · 11-22-2017, 10:28 AM

Quote:

Originally Posted by DaBoBo21

Does is sound like this?

Forgive my exhaust, if you listen carefully you'll hear the heatshield rattle.

Hmmm. I hear it but not quite. Yours sounds like there’s metal grit being tossed around or something.

Check it my video post #7 on the first page. Sounds like a lathe.

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Tcoat · 11-22-2017, 10:28 AM

If it is the TOB you shouldn't really hear much when it is engaged. The noise is much worse at idle and should come and go (or at least change sounds) when pushing the pedal.
In the list of mods you say "etc". Are any exhaust related?

SLVRSRFR · 11-22-2017, 10:49 AM

Doesn't sound anything like any TOB sound I've ever heard.

When my TOB went it was more the squealing and the "water through a copper pipe" type sound that I experienced. Nothing even remotely similar to this.

This to me sounds like something metallic vibrating against something else metallic, so I'm gonna jump on the heat shield bandwagon as well.

Good luck!

brzzy · 11-22-2017, 10:50 AM

Quote:

Originally Posted by Tcoat

If it is the TOB you shouldn't really hear much when it is engaged. The noise is much worse at idle and should come and go (or at least change sounds) when pushing the pedal.
In the list of mods you say "etc". Are any exhaust related?

Only HFC front pipe and 3” Greddy catback

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Tcoat · 11-22-2017, 10:58 AM

Won't let me quote you.

OK so the front pipe was changed. I would start my search with the heat shield on the far left of the picture. The one over the cat.

brzzy · 11-22-2017, 11:04 AM

Quote:

Originally Posted by Tcoat

Won't let me quote you.

OK so the front pipe was changed. I would start my search with the heat shield on the far left of the picture. The one over the cat.

Hmmm. Going to look tonight. Front pipe has been on there for 1.5 years. But very possible.

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Ultramaroon · 11-22-2017, 06:37 PM

Quote:

Originally Posted by brzzy

Hmmm. Going to look tonight. Front pipe has been on there for 1.5 years. But very possible.

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Try the test that I suggested. Pulling the fork forward completely disengages the TOB. You may need to pump the clutch pedal a couple times to send fluid back to the slave cylinder.

Your deli machine comment has me triple-guessing. Does the sound change when you tap the clutch pedal?

brzzy · 11-22-2017, 06:48 PM

UPDATE:

Just drove home, did a rather thorough inspection. No noise whatsoever ever.

Clutch in/out. Nothing.
Pulleys, slight hissing. Normal.
Exhaust components, nothing visibly rubbing.

If it WAS the TOB it would be persistent no?

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Ultramaroon · 11-22-2017, 08:06 PM

Yes, TOB failure ends badly 100% of the time. It can be a long road but it doesn't get better.

Meh. Give it time. It'll come back.

Mr.ac · 11-22-2017, 08:55 PM

I heard my tob going out at 40k lasted well into 80k but like said before when it goes out it goes out bad. So who knows? Video scoop it. At lest to make sure, well visually anyway.

brzzy · 11-23-2017, 12:05 AM

UPDATE:

Noise came back, clutch modulation does nothing. Noise changes based on RPM and can be modulated in that way. From my past Audio experience this tells me something is rubbing/rattling.

I’ll bet $10 it’s a nut/bolt on the skid plate and I have just wasted all of your time.

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Ultramaroon · 11-23-2017, 01:08 AM

Quote:

Originally Posted by brzzy

UPDATE:

Noise came back, clutch modulation does nothing. Noise changes based on RPM and can be modulated in that way. From my past Audio experience this tells me something is rubbing/rattling.

I’ll bet $10 it’s a nut/bolt on the skid plate and I have just wasted all of your time.

Sent from my iPhone using Tapatalk

Oh, well. It's common, especially when the not-a-skid plate starts coming loose. It's a new sound for me so I'm curious to hear what it turns out to be.

Would've just wasted my time here anyhow.

BRZnut · 11-23-2017, 08:45 AM

No waste of time. Its thanksgiving...eat, watch TV, check this forum, eat more, check forum again. Repeat.

Let us know if you ever figure it out for sure.

And Happy Thanksgiving everyone. Thanks for the years of interesting reading!

11-22-2017, 10:28 AM	#17
Tcoat Senior Member Join Date: Jul 2014 Drives: 2020 Hakone Location: London, Ont Posts: 69,841 Thanks: 61,656 Thanked 108,295 Times in 46,456 Posts Mentioned: 2499 Post(s) Tagged: 50 Thread(s)	If it is the TOB you shouldn't really hear much when it is engaged. The noise is much worse at idle and should come and go (or at least change sounds) when pushing the pedal. In the list of mods you say "etc". Are any exhaust related? __________________ Racecar spelled backwards is Racecar, because Racecar.

11-22-2017, 10:49 AM	#18
SLVRSRFR Senior Member Join Date: Aug 2014 Drives: 2013 BRZ 6MT, 2007 WRX Wagon 5MT Location: Caledon, Ontario Posts: 1,332 Thanks: 582 Thanked 534 Times in 377 Posts Mentioned: 10 Post(s) Tagged: 2 Thread(s)	Doesn't sound anything like any TOB sound I've ever heard. When my TOB went it was more the squealing and the "water through a copper pipe" type sound that I experienced. Nothing even remotely similar to this. This to me sounds like something metallic vibrating against something else metallic, so I'm gonna jump on the heat shield bandwagon as well. Good luck! __________________ @bpennerz

11-22-2017, 10:58 AM	#20
Tcoat Senior Member Join Date: Jul 2014 Drives: 2020 Hakone Location: London, Ont Posts: 69,841 Thanks: 61,656 Thanked 108,295 Times in 46,456 Posts Mentioned: 2499 Post(s) Tagged: 50 Thread(s)	Won't let me quote you. OK so the front pipe was changed. I would start my search with the heat shield on the far left of the picture. The one over the cat. __________________ Racecar spelled backwards is Racecar, because Racecar.

11-22-2017, 06:48 PM	#23
brzzy @anthonysestito Join Date: Oct 2015 Drives: 2013 Sterling Silver Metallic BRZ Location: Vaughan Posts: 391 Thanks: 117 Thanked 111 Times in 86 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	UPDATE: Just drove home, did a rather thorough inspection. No noise whatsoever ever. Clutch in/out. Nothing. Pulleys, slight hissing. Normal. Exhaust components, nothing visibly rubbing. If it WAS the TOB it would be persistent no? Sent from my iPhone using Tapatalk __________________ 2013 BRZ LIMITED STERLING SILVER METALLIC IG: @ANTHONYSESTITO

11-22-2017, 08:06 PM	#24
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,395 Thanks: 53,053 Thanked 37,228 Times in 19,308 Posts Mentioned: 1118 Post(s) Tagged: 9 Thread(s)	Yes, TOB failure ends badly 100% of the time. It can be a long road but it doesn't get better. Meh. Give it time. It'll come back. __________________ service manuals

11-22-2017, 08:55 PM	#25
Mr.ac [insert cool phrase here] Join Date: Aug 2015 Drives: BRZ Premium Location: Central Coast CA Posts: 2,368 Thanks: 709 Thanked 1,559 Times in 930 Posts Mentioned: 30 Post(s) Tagged: 0 Thread(s)	I heard my tob going out at 40k lasted well into 80k but like said before when it goes out it goes out bad. So who knows? Video scoop it. At lest to make sure, well visually anyway. __________________ New daily driver - Subaru BRZ Premium Weekend fun/track car - '91 MR2 Turbo Gen3 Old daily driver - '88 MR2 Supercharged

11-23-2017, 12:05 AM	#26
brzzy @anthonysestito Join Date: Oct 2015 Drives: 2013 Sterling Silver Metallic BRZ Location: Vaughan Posts: 391 Thanks: 117 Thanked 111 Times in 86 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	UPDATE: Noise came back, clutch modulation does nothing. Noise changes based on RPM and can be modulated in that way. From my past Audio experience this tells me something is rubbing/rattling. I’ll bet $10 it’s a nut/bolt on the skid plate and I have just wasted all of your time. Sent from my iPhone using Tapatalk __________________ 2013 BRZ LIMITED STERLING SILVER METALLIC IG: @ANTHONYSESTITO

11-23-2017, 08:45 AM	#28
BRZnut Senior Member Join Date: Oct 2012 Drives: BRZ DGM Limited Location: USA Posts: 1,237 Thanks: 5 Thanked 431 Times in 250 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	No waste of time. Its thanksgiving...eat, watch TV, check this forum, eat more, check forum again. Repeat. Let us know if you ever figure it out for sure. And Happy Thanksgiving everyone. Thanks for the years of interesting reading!

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