Click when stomping the gas... - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Brahsbrah · 06-22-2013, 07:27 PM

I read that the intake opens and closes depending on how much air is needed...

It's pretty loud though. Could it be sticking or something? Or another problem all together?

ft_sjo · 06-22-2013, 07:34 PM

Are you running 91 gas?

Brahsbrah · 06-22-2013, 07:35 PM

Yessir!

husker741 · 06-22-2013, 07:50 PM

I have this also. Got louder after installing my inlet hose.

Brahsbrah · 06-23-2013, 12:30 AM

Quote:

Originally Posted by husker741

I have this also. Got louder after installing my inlet hose.

No idea what is causing it?

It seems like it only happens when I got from no throttle and stop it...

ft_sjo · 06-23-2013, 04:01 AM

Does it sound like a metal ball bearing hitting a metal pan?

BRZnut · 06-23-2013, 09:39 AM

Need sound clip!

radroach · 06-23-2013, 09:57 AM

Automatic or Manual?

Brahsbrah · 06-23-2013, 11:55 AM

Quote:

Originally Posted by ft_sjo

Does it sound like a metal ball bearing hitting a metal pan?

Perfect description.

I can take a sound clip later if I remember.

And yes it is 6MT.

ft_sjo · 06-23-2013, 02:04 PM

It sounds like transient detonation. Try to change gear a little easier and ensure your foot is off the clutch before you go back on the throttle.

Brahsbrah · 06-23-2013, 06:03 PM

Quote:

Originally Posted by ft_sjo

It sounds like transient detonation. Try to change gear a little easier and ensure your foot is off the clutch before you go back on the throttle.

I googled that and couldn't really find put what it meant. Can you elaborate?

ft_sjo · 06-24-2013, 04:53 AM

Well, historically it means that the ECU/sensors in the car couldn't keep up with your movements, so when rapidly change something (e.g. the throttle) then for a split second the timing would be too advanced and you'd get a little click of light det/knock/pinking. It's not normally an issue.

However, I would expect better from a modern car, fast electronics, complex calibration/strategies. I too get some 'tip-in det'. Tip-in means when go into a change, e.g. from 0% to 100% throttle. Tip-out is the opposite, so if you reverse the action.

There are control strategies and tables in the ecu which are supposed to handle transients and knock should not happen. It sounds as if the behaviour is worse on 91 AKI. I run equiv. of 93 AKI (98RON) and I do get some tip-in det when driven poorly (e.g. medium engine speed, quick gear changes, some clutch slipping).

Some folk think it's because the mixture is lean but to be honest there's not enough time during a transient for a lean/hot mixture to cause det, it's 99% likely to be due to spark angle at the time.

There's nothing you can do as a consumer really other than a) complain at your dealer (who will just say it's normal), b) change gear a bit nicer.

xjohnx · 06-24-2013, 08:33 AM

Quote:

Originally Posted by ft_sjo

There's nothing you can do as a consumer really other than a) complain at your dealer (who will just say it's normal), b) change gear a bit nicer.

Wouldn't the latest ROM fix the issue? I know US dealers may not have access to it yet, but it's available through tuners, no?

ft_sjo · 06-24-2013, 08:56 AM

Quote:

Originally Posted by xjohnx

Wouldn't the latest ROM fix the issue? I know US dealers may not have access to it yet, but it's available through tuners, no?

No, this is a different transient det behaviour. The one apparently killer injector seals only happens above 5200rpm when you change gear < 600ms.

Note, I said 'behaviour' and not 'problem'.

06-22-2013, 07:27 PM	#1
Brahsbrah Senior Member Join Date: Jun 2013 Drives: 2013 BRZ Sport Tech White Pearl Location: Halifax, NS, Canada Posts: 150 Thanks: 17 Thanked 14 Times in 14 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Click when stomping the gas... I read that the intake opens and closes depending on how much air is needed... It's pretty loud though. Could it be sticking or something? Or another problem all together?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
transmission or diferential peoblem? CLICK/TICK	subiesteve	Issues \| Warranty \| Recalls / TSB	38	08-17-2013 10:20 PM
Click lock hardwood floors?	Wonderbar	Northwest	1	04-08-2013 01:27 AM
Got camber? Click for lolz	SubarooMike	Other Vehicles & General Automotive Discussions	8	11-12-2012 01:45 AM
Click on window roll down.	DantKR	Issues \| Warranty \| Recalls / TSB	3	09-07-2012 11:37 AM
Want a first-shipment BRZ? Click here	Tainen	BRZ First-Gen (2012+) — General Topics	17	05-14-2012 03:29 PM

06-22-2013, 07:34 PM	#2
ft_sjo Banned Join Date: Oct 2012 Drives: GT86 Location: The Motherland Posts: 1,398 Thanks: 140 Thanked 473 Times in 271 Posts Mentioned: 22 Post(s) Tagged: 0 Thread(s)	Are you running 91 gas?

06-22-2013, 07:35 PM	#3
Brahsbrah Senior Member Join Date: Jun 2013 Drives: 2013 BRZ Sport Tech White Pearl Location: Halifax, NS, Canada Posts: 150 Thanks: 17 Thanked 14 Times in 14 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Yessir!

06-22-2013, 07:50 PM	#4
husker741 Banned Join Date: Feb 2013 Drives: 2013 Whiteout Scion FR-S 6MT Location: Gainesville, FL Posts: 3,272 Thanks: 1,278 Thanked 4,183 Times in 1,415 Posts Mentioned: 28 Post(s) Tagged: 2 Thread(s)	I have this also. Got louder after installing my inlet hose.

06-23-2013, 04:01 AM	#6
ft_sjo Banned Join Date: Oct 2012 Drives: GT86 Location: The Motherland Posts: 1,398 Thanks: 140 Thanked 473 Times in 271 Posts Mentioned: 22 Post(s) Tagged: 0 Thread(s)	Does it sound like a metal ball bearing hitting a metal pan?

06-23-2013, 09:39 AM	#7
BRZnut Senior Member Join Date: Oct 2012 Drives: BRZ DGM Limited Location: USA Posts: 1,237 Thanks: 5 Thanked 431 Times in 250 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	Need sound clip!

06-23-2013, 09:57 AM	#8
radroach Senior Member Join Date: Feb 2013 Drives: car Location: usa Posts: 2,162 Thanks: 1,028 Thanked 867 Times in 530 Posts Mentioned: 35 Post(s) Tagged: 1 Thread(s)	Automatic or Manual?

06-23-2013, 02:04 PM	#10
ft_sjo Banned Join Date: Oct 2012 Drives: GT86 Location: The Motherland Posts: 1,398 Thanks: 140 Thanked 473 Times in 271 Posts Mentioned: 22 Post(s) Tagged: 0 Thread(s)	It sounds like transient detonation. Try to change gear a little easier and ensure your foot is off the clutch before you go back on the throttle.

06-24-2013, 04:53 AM	#12
ft_sjo Banned Join Date: Oct 2012 Drives: GT86 Location: The Motherland Posts: 1,398 Thanks: 140 Thanked 473 Times in 271 Posts Mentioned: 22 Post(s) Tagged: 0 Thread(s)	Well, historically it means that the ECU/sensors in the car couldn't keep up with your movements, so when rapidly change something (e.g. the throttle) then for a split second the timing would be too advanced and you'd get a little click of light det/knock/pinking. It's not normally an issue. However, I would expect better from a modern car, fast electronics, complex calibration/strategies. I too get some 'tip-in det'. Tip-in means when go into a change, e.g. from 0% to 100% throttle. Tip-out is the opposite, so if you reverse the action. There are control strategies and tables in the ecu which are supposed to handle transients and knock should not happen. It sounds as if the behaviour is worse on 91 AKI. I run equiv. of 93 AKI (98RON) and I do get some tip-in det when driven poorly (e.g. medium engine speed, quick gear changes, some clutch slipping). Some folk think it's because the mixture is lean but to be honest there's not enough time during a transient for a lean/hot mixture to cause det, it's 99% likely to be due to spark angle at the time. There's nothing you can do as a consumer really other than a) complain at your dealer (who will just say it's normal), b) change gear a bit nicer.

User Name		Remember Me?
Password