Loud Buzzing Noise - Car Not Running - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Apex_BRZ · 04-11-2014, 12:43 AM

I went out to my garage tonight and heard a loud buzzing noise coming from my BRZ. Investigated it a bit and found that it was coming from the rear, possibly more toward the passenger side. My only thought was that possibly the fuel pump was running or a relay back there was chattering.

The car hasn't been started in over 5 hours, so I'm a bit concerned why this is happening and am a bit worried about a possible fire hazard. It stopped shortly after I took this video. Phone cam doesn't pick the noise up well away from the car, but you can hear it clear as day. Picked up great from under.

[ame="https://www.youtube.com/watch?v=hRRfew-WWxM"]https://www.youtube.com/watch?v=hRRfew-WWxM[/ame]

HapaHaole · 04-11-2014, 12:57 AM

That's normal, its your EVAP system doing its test.

Sony · 04-11-2014, 01:01 AM

Quote:

Originally Posted by HapaHaole

That's normal, its your EVAP system doing its test.

This ^^^

Apex_BRZ · 04-11-2014, 01:08 AM

Good to hear.

I've never heard this on any other car before. Can anyone tell me a bit more about it?

HapaHaole · 04-11-2014, 01:40 AM

Quote:

Originally Posted by Apex_BRZ

Good to hear.

I've never heard this on any other car before. Can anyone tell me a bit more about it?

EVAP is the system that checks and monitors the fuel vapors in your fuel tank. IT captures the fumes into a charcoal canister which is later send to your engine to be used as fuel. To test the fuel system to make sure there is No leaks the system applies a vacuum pump to the tank while making it air tight. The noise you hear is the pump applying very small amount of vacuum to the tank to check for leaks.

Every car has this, just different versions. New systems have a dedicated vacuum pump, and that's what you are hearing.

if you ever had a newer car and left the gas gap loose your check engine light turn on, well its because that test failed.

mav1178 · 04-11-2014, 02:12 AM

It's in your owner's manual. Read it.

-alex

Apex_BRZ · 04-11-2014, 10:18 AM

Quote:

Originally Posted by mav1178

It's in your owner's manual. Read it.

-alex

And avoid a lengthy discussion with you wonderful fellas? Don't be ridiculous.

ChrisxChainsaw · 04-13-2014, 06:00 PM

My motorcycle used to do that (2013 636) I was like dafuq?!

Sent from my iPhone using Tapatalk

04-11-2014, 12:43 AM	#1
Apex_BRZ Senior Member Join Date: Aug 2013 Drives: 2013 Subaru BRZ Limited (WRB) Location: Iowa Posts: 259 Thanks: 9 Thanked 81 Times in 53 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Loud Buzzing Noise - Car Not Running I went out to my garage tonight and heard a loud buzzing noise coming from my BRZ. Investigated it a bit and found that it was coming from the rear, possibly more toward the passenger side. My only thought was that possibly the fuel pump was running or a relay back there was chattering. The car hasn't been started in over 5 hours, so I'm a bit concerned why this is happening and am a bit worried about a possible fire hazard. It stopped shortly after I took this video. Phone cam doesn't pick the noise up well away from the car, but you can hear it clear as day. Picked up great from under. [ame="https://www.youtube.com/watch?v=hRRfew-WWxM"]https://www.youtube.com/watch?v=hRRfew-WWxM[/ame]

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Buzzing noise from rear pass wheel area when parked	pszuvela	Issues \| Warranty \| Recalls / TSB	7	12-11-2013 01:36 AM
FR-S Loud Engine Noise	White0utFrs	Issues \| Warranty \| Recalls / TSB	15	09-20-2013 09:28 PM
Buzzing speakers	FRS_Sovereign	Electronics \| Audio \| NAV \| Infotainment	8	06-09-2013 03:41 PM
buzzing in steering wheel	wbsrazzle	Issues \| Warranty \| Recalls / TSB	2	05-15-2013 10:05 PM
buzzing noise from steering wheel FR-S	:DK	Scion FR-S / Toyota 86 GT86 General Forum	1	10-07-2012 02:52 AM

04-11-2014, 01:08 AM	#4
Apex_BRZ Senior Member Join Date: Aug 2013 Drives: 2013 Subaru BRZ Limited (WRB) Location: Iowa Posts: 259 Thanks: 9 Thanked 81 Times in 53 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Good to hear. I've never heard this on any other car before. Can anyone tell me a bit more about it?

04-11-2014, 02:12 AM	#6
mav1178 Senior Member Join Date: Apr 2013 Drives: 2005 Toyota Camry Location: 91745 Posts: 6,562 Thanks: 493 Thanked 6,099 Times in 3,030 Posts Mentioned: 95 Post(s) Tagged: 3 Thread(s)	It's in your owner's manual. Read it. -alex

04-13-2014, 06:00 PM	#8
ChrisxChainsaw Member Join Date: Apr 2014 Drives: 2013 Scion FRS Location: Tampa FL Posts: 41 Thanks: 12 Thanked 15 Times in 13 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	My motorcycle used to do that (2013 636) I was like dafuq?! Sent from my iPhone using Tapatalk

User Name		Remember Me?
Password