High squealing/grinding noise when driving - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Rambo305kid · 12-01-2020, 04:57 PM

Ok so I’ve researched and put in a lot of wrench time to figuring this out. It’s driving me crazy!! Please help me.

When I drive at 4K rpm I get a grinding noise or squealing. Listen to the video. I replaced every pulley on the car with nst pulleys, thinking my pulleys were beat and it needed to be replaced. Mind you I’m at at 94k miles. I’ve also replaced the belt to also eliminate that. Still had same issue. Figured ok
Well maybe the bearings inside the alternator is going bad as well. Bought a remanufactured alternator and the car is still giving me this issue. What could I be missing? It’s only when I drive a live 4K and keep it there will
You here this noise.

Rambo305kid · 12-01-2020, 05:04 PM

can’t upload video so posted on YouTube

ls1ac · 12-01-2020, 06:56 PM

Can the sound be duplicated while parked and someone else holding the accelerator at that RPM?
Will it happen at that RPM in most gears?

HaXx · 12-01-2020, 07:14 PM

are you aware of the throw out bearing issue with the 2013"s and have you considered/researched that as a culprit. is the sound ever present at startup when the motor is warming, or only present when the car is moving at 4krpm. the TOB issue is a similar sound, but the sound can be manipulated drastically by depressing the clutch pedal in and out.

Ultramaroon · 12-01-2020, 07:21 PM

tap your foot on the clutch pedal, just a touch while it's happening.

Rambo305kid · 12-01-2020, 07:38 PM

I replaced my clutch wi to act hd at 86k with verus forged fork and billet act throw out bearing to.

Rambo305kid · 12-01-2020, 07:38 PM

It happens at any gear only when driving. When it’s neutral it doesn’t do it

EndlessAzure · 12-02-2020, 01:31 AM

When I had my ACT clutch, it would sometimes squeal around that rev range. It would go away if I put a little pressure on the clutch pedal. May just be the clutch tolerances/something vibrating

12-01-2020, 04:57 PM	#1
Rambo305kid Junior Member Join Date: Jul 2020 Drives: 2013 Scion frs Location: Miami Florida Posts: 6 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	High squealing/grinding noise when driving Ok so I’ve researched and put in a lot of wrench time to figuring this out. It’s driving me crazy!! Please help me. When I drive at 4K rpm I get a grinding noise or squealing. Listen to the video. I replaced every pulley on the car with nst pulleys, thinking my pulleys were beat and it needed to be replaced. Mind you I’m at at 94k miles. I’ve also replaced the belt to also eliminate that. Still had same issue. Figured ok Well maybe the bearings inside the alternator is going bad as well. Bought a remanufactured alternator and the car is still giving me this issue. What could I be missing? It’s only when I drive a live 4K and keep it there will You here this noise. Attached Images

12-01-2020, 07:14 PM	#4
HaXx Member Join Date: Dec 2017 Drives: jrsc_brz Location: boston Posts: 965 Thanks: 726 Thanked 676 Times in 337 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	are you aware of the throw out bearing issue with the 2013"s and have you considered/researched that as a culprit. is the sound ever present at startup when the motor is warming, or only present when the car is moving at 4krpm. the TOB issue is a similar sound, but the sound can be manipulated drastically by depressing the clutch pedal in and out. __________________ JACKSON RACING l RALLYBACKER l FORGESTAR l FORTUNE AUTO l INVIDIA

12-01-2020, 07:21 PM	#5
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)	tap your foot on the clutch pedal, just a touch while it's happening. __________________ service manuals Last edited by Ultramaroon; 12-01-2020 at 07:29 PM. Reason: yeah, what haxx said

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12-01-2020, 05:04 PM	#2
Rambo305kid Junior Member Join Date: Jul 2020 Drives: 2013 Scion frs Location: Miami Florida Posts: 6 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	can’t upload video so posted on YouTube

12-01-2020, 07:38 PM	#6
Rambo305kid Junior Member Join Date: Jul 2020 Drives: 2013 Scion frs Location: Miami Florida Posts: 6 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I replaced my clutch wi to act hd at 86k with verus forged fork and billet act throw out bearing to.

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