New rattling sound at idle - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

IAmNotTheDriftKing · 10-15-2014, 11:41 PM

This isn't the standard sounds the engine makes. Not sure how to describe it. It happens randomly, only at idle, and you hear it from the drivers side of the engine bay. I tried to listen to it with the engine bay open, but these engines make so many noises. Car runs fine, no bogging, backfiring, nothing. It is just this strange sound at idle.

Could it be too much oil? I took it to the dealership for a free oil change(it took 3 hours, totally not worth it), and I checked the levels today(granted it was hot oil) and it was over the second line. I am writing it the instant I noticed it. I am going back when the car has cooled, making a video, and checking the level again.

civdaddy · 10-16-2014, 01:25 AM

When did the noise start?

IAmNotTheDriftKing · 10-16-2014, 02:48 AM

Quote:

Originally Posted by civdaddy

When did the noise start?

It started today, but since I noticed it, it hasn't done it since. I couldn't get a recording because it wasn't making the sound. Might have just been me...

Tcoat · 10-16-2014, 10:36 AM

As informative as the forum is I think it can also cause us to look for problems that are not really there.
Once somebody posts about a noise or such we all start looking for it to happen to us so even "normal" things start to stand out and annoy.
Just yesterday I was sitting at a light and noticed that my exhaust tone seemed to go up and down. I immediately thought "OH god idle dip"! Looked at tach and it was steady as a rock on 700. Still could hear what I thought was my exhaust going up and down. Rolled down passenger window to listen and could tell right off that it was actually the truck beside me that was making the noise and it just happened to harmonize perfectly with my exhaust tone.
The point being, if I had not read about all the idle issues I would never have know and been paranoid that it was going to happen to me.

wtrxprs007 · 10-18-2014, 12:16 AM

Try taking a video of it if you can

swpbrz · 10-19-2014, 12:38 AM

I have an idle rattle like that too sometimes. Only hear it from inside but sounds like its in the engine bay. If I pop the hood and listen I can't hear it.. No death yet.

tyrantcf · 10-19-2014, 01:50 AM

Does this only seem to happen when the car is cold? I seem to have a similar sort of ratttling sound, but I'm not sure yet if I'm just imagining it, because it seems to go away.

Shady195 · 10-19-2014, 03:53 PM

Does it sound like this? Skip to just before the 18 second mark to hear the difference in sound.. Was told its a normal sound with the DI system.

[ame]http://youtu.be/J49X663XeKA[/ame]

ZZT86 · 10-19-2014, 09:29 PM

Sounds worse than those old Astron II motors from the 80's just like cement mixers :/

IAmNotTheDriftKing · 10-23-2014, 01:03 PM

Hey guys! Here is the sound. It only happens on cold days, and only after the car has warmed up a bit. I am not sure if it is the direct injectors. I have only done headers and OFT as mods, oh and a catback. . . but that isn't too major. You can't hear it on the outside, only inside.

[ame="https://www.youtube.com/watch?v=cK5Fvh-lvBw"]Scion FRS noise - YouTube[/ame]

FRZ · 10-23-2014, 02:39 PM

I think I have that noise too. Kind of sounds like a diesel engine and only happens after the car warms up and on idle. Sound disappears immediately when you step on the gas.

I think its the dreaded crickets caused by the defect in the fuel pump. If you open your hood and listen, you'll probably hear the high pitched cricket noise.

Shady195 · 10-23-2014, 03:14 PM

Sounds like the DIrect Injection, however it sounds awfully fast/loud

aagun · 10-23-2014, 04:45 PM

Press the clutch !! The sound is gone

IAmNotTheDriftKing · 10-23-2014, 06:25 PM

Quote:

Originally Posted by Shady195

Sounds like the DIrect Injection, however it sounds awfully fast/loud

OFT does increase the idle to about 800 instead of 600, which might explain why it is faster. The sound is pretty much gone after 1000rpms.

10-15-2014, 11:41 PM	#1
IAmNotTheDriftKing Senior Member Join Date: Feb 2013 Drives: I own an FR-S. . . whatelse! Location: Northwest Indiana Posts: 318 Thanks: 114 Thanked 140 Times in 84 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	New rattling sound at idle This isn't the standard sounds the engine makes. Not sure how to describe it. It happens randomly, only at idle, and you hear it from the drivers side of the engine bay. I tried to listen to it with the engine bay open, but these engines make so many noises. Car runs fine, no bogging, backfiring, nothing. It is just this strange sound at idle. Could it be too much oil? I took it to the dealership for a free oil change(it took 3 hours, totally not worth it), and I checked the levels today(granted it was hot oil) and it was over the second line. I am writing it the instant I noticed it. I am going back when the car has cooled, making a video, and checking the level again.

10-16-2014, 10:36 AM	#4
Tcoat Senior Member Join Date: Jul 2014 Drives: 2020 Hakone Location: London, Ont Posts: 69,845 Thanks: 61,656 Thanked 108,286 Times in 46,456 Posts Mentioned: 2495 Post(s) Tagged: 50 Thread(s)	As informative as the forum is I think it can also cause us to look for problems that are not really there. Once somebody posts about a noise or such we all start looking for it to happen to us so even "normal" things start to stand out and annoy. Just yesterday I was sitting at a light and noticed that my exhaust tone seemed to go up and down. I immediately thought "OH god idle dip"! Looked at tach and it was steady as a rock on 700. Still could hear what I thought was my exhaust going up and down. Rolled down passenger window to listen and could tell right off that it was actually the truck beside me that was making the noise and it just happened to harmonize perfectly with my exhaust tone. The point being, if I had not read about all the idle issues I would never have know and been paranoid that it was going to happen to me. __________________ Racecar spelled backwards is Racecar, because Racecar.

10-19-2014, 01:50 AM	#7
tyrantcf Senior Member Join Date: Apr 2014 Drives: '16 WRX, CBR1000RR Location: Bakersfield, CA Posts: 560 Thanks: 422 Thanked 369 Times in 213 Posts Mentioned: 18 Post(s) Tagged: 1 Thread(s)	Does this only seem to happen when the car is cold? I seem to have a similar sort of ratttling sound, but I'm not sure yet if I'm just imagining it, because it seems to go away. __________________ Phantom ESC'd Build Thread (Retired):http://www.ft86club.com/forums/showthread.php?t=75293

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10-16-2014, 01:25 AM	#2
civdaddy Senior Member Join Date: Oct 2012 Drives: Slow Location: U.S. Posts: 261 Thanks: 48 Thanked 134 Times in 68 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	When did the noise start?

10-18-2014, 12:16 AM	#5
wtrxprs007 Senior Member Join Date: Oct 2013 Drives: 2006 Toyota Prado 4.0V6 Location: Melbourne, Australia Posts: 196 Thanks: 887 Thanked 114 Times in 72 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Try taking a video of it if you can

10-19-2014, 12:38 AM	#6
swpbrz Senior Member Join Date: Mar 2014 Drives: swp brz limited Location: ca Posts: 205 Thanks: 30 Thanked 81 Times in 46 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I have an idle rattle like that too sometimes. Only hear it from inside but sounds like its in the engine bay. If I pop the hood and listen I can't hear it.. No death yet.

10-19-2014, 03:53 PM	#8
Shady195 Senior Member Join Date: Jun 2014 Drives: '13 10 Series FRS #1203 Location: Albany, NY Posts: 850 Thanks: 7 Thanked 386 Times in 221 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Does it sound like this? Skip to just before the 18 second mark to hear the difference in sound.. Was told its a normal sound with the DI system. [ame]http://youtu.be/J49X663XeKA[/ame]

10-19-2014, 09:29 PM	#9
ZZT86 Senior Member Join Date: Jul 2012 Drives: BR86 Location: Location Posts: 841 Thanks: 310 Thanked 146 Times in 114 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Sounds worse than those old Astron II motors from the 80's just like cement mixers :/

10-23-2014, 01:03 PM	#10
IAmNotTheDriftKing Senior Member Join Date: Feb 2013 Drives: I own an FR-S. . . whatelse! Location: Northwest Indiana Posts: 318 Thanks: 114 Thanked 140 Times in 84 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Hey guys! Here is the sound. It only happens on cold days, and only after the car has warmed up a bit. I am not sure if it is the direct injectors. I have only done headers and OFT as mods, oh and a catback. . . but that isn't too major. You can't hear it on the outside, only inside. [ame="https://www.youtube.com/watch?v=cK5Fvh-lvBw"]Scion FRS noise - YouTube[/ame]

10-23-2014, 02:39 PM	#11
FRZ Member Join Date: Nov 2012 Drives: Subaru BRZ Location: GTA Posts: 20 Thanks: 2 Thanked 25 Times in 4 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I think I have that noise too. Kind of sounds like a diesel engine and only happens after the car warms up and on idle. Sound disappears immediately when you step on the gas. I think its the dreaded crickets caused by the defect in the fuel pump. If you open your hood and listen, you'll probably hear the high pitched cricket noise.

10-23-2014, 03:14 PM	#12
Shady195 Senior Member Join Date: Jun 2014 Drives: '13 10 Series FRS #1203 Location: Albany, NY Posts: 850 Thanks: 7 Thanked 386 Times in 221 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Sounds like the DIrect Injection, however it sounds awfully fast/loud

10-23-2014, 04:45 PM	#13
aagun Senior Member Join Date: Nov 2012 Drives: 86 Location: uae Posts: 403 Thanks: 202 Thanked 67 Times in 56 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Press the clutch !! The sound is gone

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