Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Transmission whining noise, don't believe it's the throwout bearing.

jfarkas · 02-28-2018, 02:25 AM

First off, first time poster, long time lurker here so hello all!

I own a 2014 FR-S, bought it last July at 21,600 miles, currently at 32,500. Around late November, early December when it started getting cold, I began noticing a whining sound coming from the transmission on startup.
Here's the important details:

- Loudest on cold start, in neutral, with clutch out.
- Pressing in the clutch greatly lessens it, if not completely eliminates it.
- Most noticeable through 3500 RPM in first and second gear, slightly noticeable in third.
- It appears to almost completely disappear once its warmed up.
- When revving in neutral, clutch out, it whines, getting louder with RPM. If I push the clutch in a rev, there's no whining.

It almost sounds like straight-cut gear whine or supercharger whine. As far as I can recall, it didn't make this noise over the summer and only started once the weather cooled off. However, since I began noticing it, it has started to get ever so slightly louder and has expanded into third and fourth gear when cold.

I browsed through many of the throwout bearing noise related threads and had a hard time finding anything that matched what I'm hearing.

Because it goes away when pushing the clutch in and happens while driving, I suspect it could be the input shaft bearing rather than the TOB. Has anyone else ran into this noise or am I wrong and is it the infamous TOB?

02-28-2018, 02:25 AM	#1
jfarkas Member Join Date: Sep 2017 Drives: 2014 FR-S Location: Pittsburgh, PA Posts: 23 Thanks: 5 Thanked 12 Times in 7 Posts Mentioned: 1 Post(s)	Transmission whining noise, don't believe it's the throwout bearing. First off, first time poster, long time lurker here so hello all! I own a 2014 FR-S, bought it last July at 21,600 miles, currently at 32,500. Around late November, early December when it started getting cold, I began noticing a whining sound coming from the transmission on startup. Here's the important details: - Loudest on cold start, in neutral, with clutch out. - Pressing in the clutch greatly lessens it, if not completely eliminates it. - Most noticeable through 3500 RPM in first and second gear, slightly noticeable in third. - It appears to almost completely disappear once its warmed up. - When revving in neutral, clutch out, it whines, getting louder with RPM. If I push the clutch in a rev, there's no whining. It almost sounds like straight-cut gear whine or supercharger whine. As far as I can recall, it didn't make this noise over the summer and only started once the weather cooled off. However, since I began noticing it, it has started to get ever so slightly louder and has expanded into third and fourth gear when cold. I browsed through many of the throwout bearing noise related threads and had a hard time finding anything that matched what I'm hearing. Because it goes away when pushing the clutch in and happens while driving, I suspect it could be the input shaft bearing rather than the TOB. Has anyone else ran into this noise or am I wrong and is it the infamous TOB?