Weird Noise On Deceleration - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

thatkidghost · 04-28-2021, 01:52 PM

Hey guys ive had this frs for about 4 years now its manual and recently it started making a weird sound from under the car to the back end similar to a grinding sound but it only makes it when im in gear and foot not on the gas. Mainly in 1st, 2nd, 3rd Gear the higher ones it barely makes any sound and when the car is hot its almost non existent. When im in neutral the sound is still there but very quiet. any ideas ?

KMA KiCKz · 04-28-2021, 02:00 PM

Quote:

Originally Posted by thatkidghost

Hey guys ive had this frs for about 4 years now its manual and recently it started making a weird sound from under the car to the back end similar to a grinding sound but it only makes it when im in gear and foot not on the gas. Mainly in 1st, 2nd, 3rd Gear the higher ones it barely makes any sound and when the car is hot its almost non existent. When im in neutral the sound is still there but very quiet. any ideas ?

Might want to jack it up and take a closer look, you won't really know until you thoroughly inspect the suspected area.

The "grinding sound" makes me suspect that it may be your TOB but since you said it's near the back, I'd say check your rotors/brake pads? Is the car modified? Was there anything changed recently?

thatkidghost · 04-28-2021, 02:07 PM

Quote:

Originally Posted by KMA KiCKz

Might want to jack it up and take a closer look, you won't really know until you thoroughly inspect the suspected area.

The "grinding sound" makes me suspect that it may be your TOB but since you said it's near the back, I'd say check your rotors/brake pads? Is the car modified? Was there anything changed recently?

only bolt ons really but nothing recent. i was thinking it was my brakes because they are overdue for being changed. it only really happens when engine braking as well but the sound doesnt come from the engine bay

KMA KiCKz · 04-28-2021, 02:15 PM

Quote:

Originally Posted by thatkidghost

only bolt ons really but nothing recent. i was thinking it was my brakes because they are overdue for being changed. it only really happens when engine braking as well but the sound doesnt come from the engine bay

Try inspecting them to see how much life is left on the pads.

Depending on how many miles are on those pads and how hard you drive your car, it may be time to get them replaced.
You could also swap out the old rotors too since you're already there.

thatkidghost · 04-28-2021, 02:43 PM

Quote:

Originally Posted by KMA KiCKz

Try inspecting them to see how much life is left on the pads.

Depending on how many miles are on those pads and how hard you drive your car, it may be time to get them replaced.
You could also swap out the old rotors too since you're already there.

do you think theres any chance they would be the cause of that sound ?

KMA KiCKz · 04-28-2021, 03:03 PM

Quote:

Originally Posted by thatkidghost

do you think theres any chance they would be the cause of that sound ?

They could be but you won't know for sure without taking a look at them first.

Dake · 04-28-2021, 03:19 PM

If it only makes it in gear, it sounds like a transmission or differential problem. Maybe backlash out of adjustment?

Ashikabi · 04-28-2021, 04:30 PM

Quote:

Originally Posted by Dake

If it only makes it in gear, it sounds like a transmission or differential problem. Maybe backlash out of adjustment?

I'm voting throw out bearing

Sent from my ONEPLUS A5010 using Tapatalk

thatkidghost · 04-29-2021, 11:30 AM

Quote:

Originally Posted by Dake

If it only makes it in gear, it sounds like a transmission or differential problem. Maybe backlash out of adjustment?

https://drive.google.com/file/d/1cN7...ew?usp=sharing

thats only in second gear just on gas and off gas

DarkSideFRS · 04-29-2021, 12:00 PM

good ol' TOB

Wally86 · 04-29-2021, 12:08 PM

Quote:

Originally Posted by thatkidghost

https://drive.google.com/file/d/1cN7...ew?usp=sharing

thats only in second gear just on gas and off gas

File isn't public just so you know

thatkidghost · 04-29-2021, 12:10 PM

Quote:

Originally Posted by Wally86

File isn't public just so you know

https://drive.google.com/file/d/1cN7...ew?usp=sharing

how about now ?

Wally86 · 04-29-2021, 12:20 PM

Quote:

Originally Posted by thatkidghost

https://drive.google.com/file/d/1cN7...ew?usp=sharing

how about now ?

Good to go!

thatkidghost · 04-29-2021, 12:26 PM

Quote:

Originally Posted by Wally86

Good to go!

any idea what that sound is lol ?

04-28-2021, 01:52 PM	#1
thatkidghost Junior Member Join Date: Apr 2021 Drives: 2014 Scion FRS Location: Florida Posts: 8 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Weird Noise On Deceleration Hey guys ive had this frs for about 4 years now its manual and recently it started making a weird sound from under the car to the back end similar to a grinding sound but it only makes it when im in gear and foot not on the gas. Mainly in 1st, 2nd, 3rd Gear the higher ones it barely makes any sound and when the car is hot its almost non existent. When im in neutral the sound is still there but very quiet. any ideas ?

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04-28-2021, 03:19 PM	#7
Dake Senior Member Join Date: Aug 2012 Drives: FR-S Location: Houston Posts: 1,070 Thanks: 466 Thanked 828 Times in 419 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	If it only makes it in gear, it sounds like a transmission or differential problem. Maybe backlash out of adjustment?

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