MT, neutral 15-10mph slowing, ratcheting noise - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

bcj · 04-16-2013, 11:11 PM

My MT FR-s occasionally makes a ratchet like sound when in neutral gently slowing down at about 15-10 mph.
Not all the time, was quite warm at the end of a long day touring.
Sounds exactly like a ratcheting noise maker or holding the socket and twirling a ratchet wrench.

It always stopped making noise before the car came to a complete halt. 15-10 only.
In neutral clutch engaged (foot off the pedal).

Anyone have any idea what may still be hooked up with that scenario?
Can't think of any of my old tech drive train stuff that would do that.

What's Toyburo doing behind the curtains?

industrial · 04-16-2013, 11:17 PM

Flywheel chatter? Never noticed any stock on my car. Notice alot now but with an aftermarket fw.

LavosTRD · 04-17-2013, 01:21 AM

was your a/c on?
go try to take off in second and bog the motor down, does it sound the same?

tester01 · 04-17-2013, 01:34 AM

Turn off the A/C and you won't hear it.

BuBlake · 04-17-2013, 07:18 AM

I hear this sometimes as well. Was doing it frequently when it was new, at 10k now it's a very rare occurrence. Could be my mods though.

FR-Slide · 04-17-2013, 08:22 AM

I've noticed the same thing, with and without AC. Seemed like chatter to me, which I thought was odd since the vehicle is stock.

Just picked it up a few days ago...does it go away?

Took me a while to get used to the injector clatter, and now this!

Chimpo · 04-17-2013, 08:27 AM

Driveline backlash? I know it's not the same car, but my STi sounded God awful sometimes.

Although, now that I'm thinking about it... in a neutral coast you wouldn't get a varying load on the driveline to induce this type of noise. Nevermind.

bcj · 04-18-2013, 12:33 AM

Ah Ha!!!

I did have the AC on!

Moving north now and had it turned off today. No rachet spinning.
WTF Toyota? Makes the FR-S sound like a peddle car on the boulevard.
Could be better.

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04-16-2013, 11:17 PM	#2
industrial Add lightness! Join Date: Apr 2012 Drives: 17' WRX Location: Boston Posts: 1,253 Thanks: 380 Thanked 888 Times in 411 Posts Mentioned: 20 Post(s) Tagged: 0 Thread(s)	Flywheel chatter? Never noticed any stock on my car. Notice alot now but with an aftermarket fw.

04-17-2013, 01:21 AM	#3
LavosTRD Toyota Master Tech Join Date: Sep 2012 Drives: Whiteout MT Location: San Diego Posts: 108 Thanks: 12 Thanked 50 Times in 24 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	was your a/c on? go try to take off in second and bog the motor down, does it sound the same?

04-17-2013, 01:34 AM	#4
tester01 Junior Member Join Date: Feb 2013 Drives: FR-S, Prius Location: San Diego Posts: 7 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Turn off the A/C and you won't hear it.

04-17-2013, 08:22 AM	#6
FR-Slide Senior Member Join Date: Apr 2013 Drives: 13 Whiteout 6MT Location: Raleigh, NC Posts: 246 Thanks: 104 Thanked 65 Times in 51 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	I've noticed the same thing, with and without AC. Seemed like chatter to me, which I thought was odd since the vehicle is stock. Just picked it up a few days ago...does it go away? Took me a while to get used to the injector clatter, and now this!

04-17-2013, 08:27 AM	#7
Chimpo Senior Member Join Date: Sep 2012 Drives: '15 STi Ltd Location: Probably a location near you! Posts: 297 Thanks: 37 Thanked 149 Times in 61 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Driveline backlash? I know it's not the same car, but my STi sounded God awful sometimes. Although, now that I'm thinking about it... in a neutral coast you wouldn't get a varying load on the driveline to induce this type of noise. Nevermind.

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