Whirring Noise When Shifting? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Joe-G · 01-26-2014, 12:35 AM

Has anyone else noticed this? I haven't had this happen to me in any other vehicle I've had, but it seems a bit pronounced on the FRS.

Shifting from 1-2, or 2-3 at speeds around 20-40km/h, I can hear a sort of metallic whirr while clutching in/disengaging from gear. It only lasts for that quick second after clutching out to shift gears.

Is that normal? Or am I hearing things?

Deathreaper · 01-26-2014, 02:13 AM

Pretty sure that's the synchromesh. Mine also does it, doesn't seem to be an issue.

JB86'd · 03-03-2014, 09:41 PM

I have the same thing..sounds like a mechanical whoosh..kinda metallic and harsh. Synchromesh was my first thought. It happens when I'm driving hard and shift quickly. Glad I'm not the only one.

bottle · 03-01-2015, 02:23 AM

Old post but didn't want to start a new thread.

My issue is similar, but my conditions are a bit different.

The sound appears to be a result of the ECU holding the acceleration for a split second, causing the clutch to slip during disengagement. It does not happen when the car is cold (when the RPMs drop quickly). Also does not happen at high RPM since ECU also drops the revs quickly.

This happens for me when I shift below 4K rpm, most pronounced at 2K-2.5K, when the car is warmed up.

If I push in the clutch too quickly at 2-3K RPM (even after letting go of the accelerator completely) the RPMs may jump up slightly. I have to wait a millisecond or so at lower rpms to prevent this noise, which may result in a slight jerk as the engine braking commences.

Upshifting only, no issues on downshift. Does not happen if car is already engine braking.

To be clear, the sound is a result of the clutch pedal actuation (disengagement specifically), NOT the shift itself.

I figure this may just be a normal sound, but I haven't heard it before on other cars. Anyone else experiencing this?

01-26-2014, 12:35 AM	#1
Joe-G Canada Eh! Join Date: Nov 2013 Drives: '13 FRS Location: Calgary, AB Posts: 447 Thanks: 156 Thanked 231 Times in 120 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Whirring Noise When Shifting? Has anyone else noticed this? I haven't had this happen to me in any other vehicle I've had, but it seems a bit pronounced on the FRS. Shifting from 1-2, or 2-3 at speeds around 20-40km/h, I can hear a sort of metallic whirr while clutching in/disengaging from gear. It only lasts for that quick second after clutching out to shift gears. Is that normal? Or am I hearing things?

03-03-2014, 09:41 PM	#3
JB86'd Senior Member Join Date: Oct 2013 Drives: JAWS Location: socal Posts: 703 Thanks: 753 Thanked 437 Times in 224 Posts Mentioned: 27 Post(s) Tagged: 1 Thread(s)	I have the same thing..sounds like a mechanical whoosh..kinda metallic and harsh. Synchromesh was my first thought. It happens when I'm driving hard and shift quickly. Glad I'm not the only one. __________________

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01-26-2014, 02:13 AM	#2
Deathreaper Member Join Date: Jun 2012 Drives: 2013 Scion FRS Location: Ottawa Posts: 66 Thanks: 28 Thanked 18 Times in 14 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Pretty sure that's the synchromesh. Mine also does it, doesn't seem to be an issue.

03-01-2015, 02:23 AM	#4
bottle Member Join Date: Jun 2014 Drives: BRZ Location: Toronto, ON Posts: 83 Thanks: 12 Thanked 18 Times in 14 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Old post but didn't want to start a new thread. My issue is similar, but my conditions are a bit different. The sound appears to be a result of the ECU holding the acceleration for a split second, causing the clutch to slip during disengagement. It does not happen when the car is cold (when the RPMs drop quickly). Also does not happen at high RPM since ECU also drops the revs quickly. This happens for me when I shift below 4K rpm, most pronounced at 2K-2.5K, when the car is warmed up. If I push in the clutch too quickly at 2-3K RPM (even after letting go of the accelerator completely) the RPMs may jump up slightly. I have to wait a millisecond or so at lower rpms to prevent this noise, which may result in a slight jerk as the engine braking commences. Upshifting only, no issues on downshift. Does not happen if car is already engine braking. To be clear, the sound is a result of the clutch pedal actuation (disengagement specifically), NOT the shift itself. I figure this may just be a normal sound, but I haven't heard it before on other cars. Anyone else experiencing this?

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