Metallic Rasp from engine bay - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Heidorf · 10-08-2019, 11:18 PM

Hey guys,

For a while now I have had this strange metallic rasp coming from my engine bay. It happens during low rpms and it doesnt matter if the clutch is depressed or not. Also it happens during startup and when I shift and let off the clutch. My guess is the flywheel. Want to know what you guys think before i drop the trans.

[ame="https://www.youtube.com/watch?v=Xx49IheywWY"]https://www.youtube.com/watch?v=Xx49IheywWY[/ame]

BlOody_BoOger · 10-08-2019, 11:24 PM

Quote:

Originally Posted by Heidorf

Hey guys,

For a while now I have had this strange metallic rasp coming from my engine bay. It happens during low rpms and it doesnt matter if the clutch is depressed or not. Also it happens during startup and when I shift and let off the clutch. My guess is the flywheel. Want to know what you guys think before i drop the trans.

That engine bay is really dirty??? Do you drive down a dirt road often?

Sent from my GM1915 using Tapatalk

Heidorf · 10-09-2019, 12:00 AM

Quote:

Originally Posted by BlOody_BoOger

That engine bay is really dirty??? Do you drive down a dirt road often?

Sent from my GM1915 using Tapatalk

no, its just super dusty here lol

humfrz · 10-09-2019, 12:18 AM

Quote:

Originally Posted by Heidorf

Hey guys,

For a while now I have had this strange metallic rasp coming from my engine bay. It happens during low rpms and it doesnt matter if the clutch is depressed or not. Also it happens during startup and when I shift and let off the clutch. My guess is the flywheel. Want to know what you guys think before i drop the trans.

Hello Heidorf and welcome to the forum -

I really don't hear anything unusual -

(however, my hearing ain't too good)

How many miles on your car?

Any power mods?

Can you get a stethoscope kind of thing on it, to isolate where the sound is coming from?

Although your car is a 2015, I would suspect a TOB going bad before the flywheel being bad.

PS - it looks like you have a ground strap that is not bolted down??

humfrz

Joon525 · 10-09-2019, 12:28 AM

1. A bolt is missing for that ground strap
2. The cover for that hole in the transmission is completely missing. Did you take it off to get a better clue as to the noise or did the cover fall into the transmission? Just forgot to replace it?
3. Did the bolt for the ground strap fall INTO the hole?

https://www.ft86speedfactory.com/vel...l#.XZ1UzlVKhjE Grab one of those.

ls1ac · 10-09-2019, 12:44 AM

could be an idler bearing

BlOody_BoOger · 10-09-2019, 12:46 AM

When my TOB was going out, you could hear a slight grinding sound Everytime I have my foot on the clutch coming from the engine bay inside the cabin. My guess could be the TOB they tend to go out around 40k

Sent from my GM1915 using Tapatalk

Heidorf · 10-09-2019, 12:12 PM

Quote:

Originally Posted by humfrz

Hello Heidorf and welcome to the forum -

I really don't hear anything unusual -

(however, my hearing ain't too good)

How many miles on your car?

Any power mods?

Can you get a stethoscope kind of thing on it, to isolate where the sound is coming from?

Although your car is a 2015, I would suspect a TOB going bad before the flywheel being bad.

PS - it looks like you have a ground strap that is not bolted down??

humfrz

Thanks for the welcome!

I dont have any power mods, just have a MXP frontpipe and catback and the sound started well after those mods. Got about 37k on it currently and the trans cover and ground bolt was like that when I bought the car.

The sound is definitely between the trans and engine, i checked mutiple times.

This morning my car wouldnt start

When it was turning over it was choking and it sounded like the flywheel was just spinning. Ill have to upload a clip of it when I get home.

Heidorf · 10-09-2019, 12:19 PM

Quote:

Originally Posted by Joon525

1. A bolt is missing for that ground strap
2. The cover for that hole in the transmission is completely missing. Did you take it off to get a better clue as to the noise or did the cover fall into the transmission? Just forgot to replace it?
3. Did the bolt for the ground strap fall INTO the hole?

https://www.ft86speedfactory.com/vel...l#.XZ1UzlVKhjE Grab one of those.

Thanks for letting me know but from what I know both the bolt for the ground strap and the cover for the trasmission opening was like that when i bought the car.

I never touched either of those two and Im pretty sure nothing fell into it.

humfrz · 10-09-2019, 12:27 PM

Quote:

Originally Posted by Heidorf

Thanks for the welcome!

I dont have any power mods, just have a MXP frontpipe and catback and the sound started well after those mods. Got about 37k on it currently and the trans cover and ground bolt was like that when I bought the car.

The sound is definitely between the trans and engine, i checked mutiple times.

This morning my car wouldnt start

When it was turning over it was choking and it sounded like the flywheel was just spinning. Ill have to upload a clip of it when I get home.

When you say it wouldn't start, do you mean it wouldn't turn over or wouldn't fire?

humfrz

Heidorf · 10-09-2019, 01:15 PM

Quote:

Originally Posted by humfrz

When you say it wouldn't start, do you mean it wouldn't turn over or wouldn't fire?

humfrz

Wouldn't fire, ill have to upload a clip when I get home. As it was turning over it would choke then make a spinning metal on metal sound.

Heidorf · 10-10-2019, 03:47 AM

Heres the clip of this POS not starting, Im kinda lost. Hopefully this gives a better idea with whats going on.

[ame]https://www.youtube.com/watch?v=ivSd4w178MA[/ame]

10-08-2019, 11:18 PM	#1
Heidorf Junior Member Join Date: Aug 2016 Drives: 2015 Scion FRS Location: NM Posts: 7 Thanks: 0 Thanked 2 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Metallic Rasp from engine bay Hey guys, For a while now I have had this strange metallic rasp coming from my engine bay. It happens during low rpms and it doesnt matter if the clutch is depressed or not. Also it happens during startup and when I shift and let off the clutch. My guess is the flywheel. Want to know what you guys think before i drop the trans. [ame="https://www.youtube.com/watch?v=Xx49IheywWY"]https://www.youtube.com/watch?v=Xx49IheywWY[/ame]

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10-09-2019, 12:28 AM	#5
Joon525 Senior Member Join Date: Jun 2016 Drives: 2016 BRZ Location: NJ Posts: 369 Thanks: 55 Thanked 166 Times in 108 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	1. A bolt is missing for that ground strap 2. The cover for that hole in the transmission is completely missing. Did you take it off to get a better clue as to the noise or did the cover fall into the transmission? Just forgot to replace it? 3. Did the bolt for the ground strap fall INTO the hole? https://www.ft86speedfactory.com/vel...l#.XZ1UzlVKhjE Grab one of those.

10-09-2019, 12:46 AM	#7
BlOody_BoOger Senior Member Join Date: May 2017 Drives: Hot lava FRS Monogram Charizard Location: Sacramento Ca Posts: 329 Thanks: 22 Thanked 86 Times in 63 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	When my TOB was going out, you could hear a slight grinding sound Everytime I have my foot on the clutch coming from the engine bay inside the cabin. My guess could be the TOB they tend to go out around 40k Sent from my GM1915 using Tapatalk

10-10-2019, 03:47 AM	#12
Heidorf Junior Member Join Date: Aug 2016 Drives: 2015 Scion FRS Location: NM Posts: 7 Thanks: 0 Thanked 2 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Heres the clip of this POS not starting, Im kinda lost. Hopefully this gives a better idea with whats going on. [ame]https://www.youtube.com/watch?v=ivSd4w178MA[/ame]

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