Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB
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Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB (https://www.ft86club.com/forums/index.php)
-   BRZ First-Gen (2012+) -- General Topics (https://www.ft86club.com/forums/forumdisplay.php?f=23)
-   -   1st gear crunch twisting sound (https://www.ft86club.com/forums/showthread.php?t=115727)

Ultramaroon 02-20-2017 01:04 AM
Yes.

BboyRuda 02-20-2017 01:36 AM
Quote:
Originally Posted by Drambeenie (Post 2856333)
Hey guys so I've been driving the car more and haven't had any issues with the gears stall or strange sounds. Do you think I should still take it to the dealership to be diagnosed?
Better to be safe than sorry bro.

C4RBON 02-20-2017 01:44 AM
Definitely. I'd inspect your transmission oil, diff oil, and clutch for surprises.

Ultramaroon 02-20-2017 01:49 AM
Quote:
Originally Posted by Drambeenie (Post 2856333)
Hey guys so I've been driving the car more and haven't had any issues with the gears stall or strange sounds. Do you think I should still take it to the dealership to be diagnosed?
I should explain a little more. It sounds like two gears were engaged at once. This causes the transmission to completely lock up. The only way that can happen is if some part of the gear selection mechanism is either loose, misaligned, or broken.

It's unlikely but possible for the transmission to lock up while in motion. That would be a very bad day.

guybo 02-20-2017 08:53 AM
There's the problem. You granny shifted when you should have double clutched.


It smells to me like 1st gear broke and is missing some teeth. The metal bits ar floating around in the tranny and will do more damage the more you drive the car. I don't think that'll matter much because I think they'll replace rather than rebuild.

I feel bad for you- brand new car and you expect it to be trouble-free and then this happens. But brand new cars can do this. Sometimes you just get a dud off the assembly line. That said, get it fixed under warranty and forget about it, it's just a flukey thing and the car will be fine after.

Drambeenie 02-20-2017 10:48 AM
Quote:
Originally Posted by ToySub1946 (Post 2856028)
Are you aware that your car has 'hill start assist' ?

Others have stated the default setting, when car is new, it is set to OFF.
I'm aware that this exists but didn't activate it. I've never had hill start issues before. There is def something going on inside the tranny.

wheelhaus 02-20-2017 11:46 AM
Quote:
Originally Posted by Ultramaroon (Post 2856357)
I should explain a little more. It sounds like two gears were engaged at once. This causes the transmission to completely lock up. The only way that can happen is if some part of the gear selection mechanism is either loose, misaligned, or broken.

It's unlikely but possible for the transmission to lock up while in motion. That would be a very bad day.
This would also explain the feeling of first gear "missing" and allowing the car rolling backwards. The "crunching" noise could have been the synchros skipping from non-engagement, and then the sudden engine stall caused by instantaneous synchro engagement.

Ultramaroon 02-20-2017 02:55 PM
Quote:
Originally Posted by wheelhaus (Post 2856514)
This would also explain the feeling of first gear "missing" and allowing the car rolling backwards. The "crunching" noise could have been the synchros skipping from non-engagement, and then the sudden engine stall caused by instantaneous synchro engagement.
Agreed. I don't think any gears actually failed because OP states he can drive the car normally now.

Still, unaddressed, this will happen again and be at best inconvenient, life threatening at worst.

/dramatic warning

Drambeenie 02-20-2017 03:21 PM
And there she goes... thanks for the replies guys! I'll keep the thread updated as I learn more. Curious to see what'll be found in the transmission pan.

https://i.imgur.com/7cqF3rr.jpg
https://i.imgur.com/Z16KGq4.jpg
https://i.imgur.com/l8v8uOK.jpg

Ultramaroon 02-20-2017 03:31 PM
Awww, poor baby. She'll be all better soon. :wub:

BboyRuda 02-20-2017 08:42 PM
Quote:
Originally Posted by guybo (Post 2856436)
There's the problem. You granny shifted when you should have double clutched.

Double clutching is necessary in our cars? o.O

Ultramaroon 02-20-2017 09:06 PM
Quote:
Originally Posted by BboyRuda (Post 2856788)
Double clutching is necessary in our cars? o.O
No but it actually helps, especially for second and first gear downshifts.

[ame="https://www.youtube.com/watch?v=pB-bN-RkJLM#t=47"]The Fast and the Furious (2/10) Movie CLIP - Winning's Winning (2001) HD - YouTube[/ame]

guybo 02-20-2017 09:25 PM
1 Attachment(s)
Quote:
Originally Posted by BboyRuda (Post 2856788)
Double clutching is necessary in our cars? o.O
:slap:

BboyRuda 02-20-2017 09:37 PM
Quote:
Originally Posted by Ultramaroon (Post 2856804)
No but it actually helps, especially for second and first gear downshifts.

How does it help? Why not just rev match (without double clutching) like the rest of the gears?


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