CVT issue? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

xkenx1995 · 07-02-2019, 10:25 PM

I have a little above 82k miles on my transmission and was wondering if this is a normal sound. It sounds like its coming from under the vehicle, and it resonates back towards the cabin as you drive by cars / walls.

https://streamable.com/ojcki

N1rve · 07-02-2019, 10:32 PM

Quote:

Originally Posted by xkenx1995

I have a little above 82k miles on my transmission and was wondering if this is a normal sound. It sounds like its coming from under the vehicle, and it resonates back towards the cabin as you drive by cars / walls.

https://streamable.com/ojcki

Are you in the right forum? 86's don't have CVTs.

xkenx1995 · 07-02-2019, 10:43 PM

Quote:

Originally Posted by N1rve

Are you in the right forum? 86's don't have CVTs.

Lol apologies not the best in terminology. But you get the idea. I posted a link so any help would be great. Thanks!

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humfrz · 07-02-2019, 11:20 PM

When was the last transmission fluid change?

humfrz

xkenx1995 · 07-02-2019, 11:22 PM

Quote:

Originally Posted by humfrz

When was the last transmission fluid change?

humfrz

It has never been changed, but I suspect that it could be causing the issue.

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NCtoBRZ · 07-02-2019, 11:51 PM

A recording from the engine bay may be more useful, but what you posted doesn’t sound like an auto transmission sound. If the fluid has never been changed, then it won’t hurt to have it changed anyway and it would eliminate that as the possible source of the noise.

xkenx1995 · 07-03-2019, 12:04 AM

Quote:

Originally Posted by NCtoBRZ

A recording from the engine bay may be more useful, but what you posted doesn’t sound like an auto transmission sound. If the fluid has never been changed, then it won’t hurt to have it changed anyway and it would eliminate that as the possible source of the noise.

Here you go. Hmm it actually does sound like its coming from the engine bay.

humfrz · 07-03-2019, 12:44 AM

Quote:

Originally Posted by xkenx1995

It has never been changed, but I suspect that it could be causing the issue.

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Well, whether or not the sound is coming from the transmission or not, your car's transmission is overdue for a fluid change.

That sound may be coming from a bearing (idler, alternator, compressor). Can you isolate it with a stethoscope type rig?

humfrz

xkenx1995 · 07-03-2019, 12:47 AM

Quote:

Originally Posted by humfrz

Well, whether or not the sound is coming from the transmission or not, your car's transmission is overdue for a fluid change.

That sound may be coming from a bearing (idler, alternator, compressor). Can you isolate it with a stethoscope type rig?

humfrz

Ill try and see if I can. I’ll pickup a stethoscope and update. If it makes a difference, the noise picks up as I step on the pedal.

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xkenx1995 · 07-03-2019, 01:44 AM

Quote:

Originally Posted by humfrz

Well, whether or not the sound is coming from the transmission or not, your car's transmission is overdue for a fluid change.

That sound may be coming from a bearing (idler, alternator, compressor). Can you isolate it with a stethoscope type rig?

humfrz

I got the stethoscope and I got some noise out of these 2 pulleys. I just pulled this image from google as it is too dark for me to take a decent picture. Any good after market recommendations I can look into? A pulley kit has been on my list for a while so I might as well pull the trigger on this.

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humfrz · 07-03-2019, 02:18 AM

Quote:

Originally Posted by xkenx1995

I got the stethoscope and I got some noise out of these 2 pulleys. I just pulled this image from google as it is too dark for me to take a decent picture. Any good after market recommendations I can look into? A pulley kit has been on my list for a while so I might as well pull the trigger on this.

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Well, all pulleys will make some sound when they are running, however, they shouldn't "howl" or "grind" or "wobble". Do you have access to another like car that you can compare to what you are hearing?

You may consider taking the belt off and turning each pulley to see if it feels lose or spins rough.

If the bearing in one of the pulleys is bad, just changing the "wheel" part of the pulley isn't going to help.

humfrz

xkenx1995 · 07-03-2019, 02:22 AM

Quote:

Originally Posted by humfrz

Well, all pulleys will make some sound when they are running, however, they shouldn't "howl" or "grind" or "wobble". Do you have access to another like car that you can compare to what you are hearing?

You may consider taking the belt off and turning each pulley to see if it feels lose or spins rough.

If the bearing in one of the pulleys is bad, just changing the "wheel" part of the pulley isn't going to help.

humfrz

I’ll remove the belt and find out

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ActionMaxon · 07-03-2019, 08:46 AM

If you do suspect pulleys, after you take the belt off, start the engine and listen for the noise again. If you still hear it, don't bother spinning pulleys cause that's not it. If the noise does go away with belt removed then yep, start spinnin.

xkenx1995 · 07-03-2019, 10:21 AM

Quote:

Originally Posted by ActionMaxon

If you do suspect pulleys, after you take the belt off, start the engine and listen for the noise again. If you still hear it, don't bother spinning pulleys cause that's not it. If the noise does go away with belt removed then yep, start spinnin.

Thanks for the tip. I’ll keep that in mind.

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07-02-2019, 10:25 PM	#1
xkenx1995 Member Join Date: Jun 2015 Drives: 2013 Subaru BRZ Location: California Posts: 43 Thanks: 8 Thanked 8 Times in 8 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	CVT issue? I have a little above 82k miles on my transmission and was wondering if this is a normal sound. It sounds like its coming from under the vehicle, and it resonates back towards the cabin as you drive by cars / walls. https://streamable.com/ojcki

07-03-2019, 08:46 AM	#13
ActionMaxon Professional Auto Fixer Join Date: May 2019 Drives: 2016 Oceanic FR-S as Designed Location: Oregon Posts: 123 Thanks: 41 Thanked 70 Times in 46 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	If you do suspect pulleys, after you take the belt off, start the engine and listen for the noise again. If you still hear it, don't bother spinning pulleys cause that's not it. If the noise does go away with belt removed then yep, start spinnin. __________________ Work Hard. Play Hard. 2016 Oceanic

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07-02-2019, 11:20 PM	#4
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 30,409 Thanks: 29,793 Thanked 32,808 Times in 16,829 Posts Mentioned: 715 Post(s) Tagged: 2 Thread(s)	When was the last transmission fluid change? humfrz

07-02-2019, 11:51 PM	#6
NCtoBRZ Senior Member Join Date: Nov 2017 Drives: 2017 Subaru BRZ PP WRB Location: Gulf Coast Posts: 382 Thanks: 71 Thanked 206 Times in 128 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	A recording from the engine bay may be more useful, but what you posted doesn’t sound like an auto transmission sound. If the fluid has never been changed, then it won’t hurt to have it changed anyway and it would eliminate that as the possible source of the noise.

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