Transmission syncros/gearing issue - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Cal3000 · 05-16-2013, 01:37 AM

Hi Guys,

I have a M/T. I'm having an issue when I shift from 6th to 5th gear when I am driving over 75mph, there is a grinding feeling on the shift stick. Feeling like gears are grinding. I have the clutch 100% depressed and I still have the grinding feeling/noise when I down shift only from 6th to 5th travelling over 75mph. I'm thinking it is the syncros not meshing fast enough and causing the grinding. But I am not sure. If I have the clutch 100% depressed, gears wont come into contact with each other right?

Anthonytpt · 05-16-2013, 02:06 AM

How many miles have put on the car? Is the car warmed up? What CA metro area are you in?

OrbitalEllipses · 05-16-2013, 03:26 AM

Audible noise or just resistance in the shifter? I used to feel a harshness or feedback from the shifter when downshifting 6th to 5th at those kind of speeds. Haven't tried it recently.

DrSleepy · 05-16-2013, 04:23 AM

I have a same issue, at the same speeds, and only when downshifting from 6th to 5th. I'm hoping there is some kind of minor change to remedy this.

Yruyur · 05-16-2013, 05:57 AM

I think I still have my thread in my signature where my transmission was grinding badly going into fourth. Ended up getting a new tranny, clutch and flywheel under warranty.

Sent from my SCH-I535 using Tapatalk 2

Cal3000 · 05-16-2013, 11:23 AM

I have around 17K miles on my car. I live in the Riverside Vounty area near Corona and the OC.
There is a small resistance in shifting followed by grinding. I think the harshness in resistance is normal. I think it is a mechanism speeding up the transmission to match the revs of the engine. The grinding is not normal.
Glad to hear I'm not the only one having this issue.
So warranty may cover this; I hope...

Yruyur · 05-16-2013, 11:43 AM

Of course the dealer made me sign paperwork that if they found the cutc h was burnt or the tranny oil was not stock they would not be covering it under warranty and I would have to pay some insane dealer price.

Sent from my SCH-I535 using Tapatalk 2

05-16-2013, 01:37 AM	#1
Cal3000 Senior Member Join Date: Dec 2012 Drives: Panda FR-S Location: Corona, California Posts: 531 Thanks: 297 Thanked 377 Times in 161 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Transmission syncros/gearing issue Hi Guys, I have a M/T. I'm having an issue when I shift from 6th to 5th gear when I am driving over 75mph, there is a grinding feeling on the shift stick. Feeling like gears are grinding. I have the clutch 100% depressed and I still have the grinding feeling/noise when I down shift only from 6th to 5th travelling over 75mph. I'm thinking it is the syncros not meshing fast enough and causing the grinding. But I am not sure. If I have the clutch 100% depressed, gears wont come into contact with each other right?

05-16-2013, 04:23 AM	#4
DrSleepy Member Join Date: Apr 2013 Drives: 2013 MT FRS, 2002 MR2 Location: Ellicott City Posts: 42 Thanks: 8 Thanked 7 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I have a same issue, at the same speeds, and only when downshifting from 6th to 5th. I'm hoping there is some kind of minor change to remedy this. __________________

05-16-2013, 05:57 AM	#5
Yruyur Senior Member Join Date: Jun 2012 Drives: Scion fr-s asphalt M/T Location: Phoenix, AZ Posts: 4,192 Thanks: 1,416 Thanked 1,631 Times in 941 Posts Mentioned: 96 Post(s) Tagged: 0 Thread(s)	I think I still have my thread in my signature where my transmission was grinding badly going into fourth. Ended up getting a new tranny, clutch and flywheel under warranty. Sent from my SCH-I535 using Tapatalk 2 __________________

05-16-2013, 11:43 AM	#7
Yruyur Senior Member Join Date: Jun 2012 Drives: Scion fr-s asphalt M/T Location: Phoenix, AZ Posts: 4,192 Thanks: 1,416 Thanked 1,631 Times in 941 Posts Mentioned: 96 Post(s) Tagged: 0 Thread(s)	Of course the dealer made me sign paperwork that if they found the cutc h was burnt or the tranny oil was not stock they would not be covering it under warranty and I would have to pay some insane dealer price. Sent from my SCH-I535 using Tapatalk 2 __________________

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05-16-2013, 03:26 AM	#3
OrbitalEllipses Banned Join Date: Jan 2012 Drives: Attitude Location: MD Posts: 10,046 Thanks: 884 Thanked 4,890 Times in 2,903 Posts Mentioned: 123 Post(s) Tagged: 4 Thread(s)	Audible noise or just resistance in the shifter? I used to feel a harshness or feedback from the shifter when downshifting 6th to 5th at those kind of speeds. Haven't tried it recently.

05-16-2013, 11:23 AM	#6
Cal3000 Senior Member Join Date: Dec 2012 Drives: Panda FR-S Location: Corona, California Posts: 531 Thanks: 297 Thanked 377 Times in 161 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	I have around 17K miles on my car. I live in the Riverside Vounty area near Corona and the OC. There is a small resistance in shifting followed by grinding. I think the harshness in resistance is normal. I think it is a mechanism speeding up the transmission to match the revs of the engine. The grinding is not normal. Glad to hear I'm not the only one having this issue. So warranty may cover this; I hope...

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