|
Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
|
Thread Tools | Search this Thread |
10-17-2020, 11:51 PM | #1 |
September
Join Date: Jun 2018
Drives: 2015 BRZ
Location: Virginia
Posts: 83
Thanks: 55
Thanked 13 Times in 10 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Is my engine knocking?
Hello guys, always getting some good answers here so I’m gonna ask away. I’m currently running nameless long tube headers with oft stg 2+ 93 octane tune. Few days ago I’ve had p0030 popped up, I believe it’s my o2 sensor. I had the CEL for days and it went away by itself.. and now I’m just diagnosing everything and I noticed that my tablet shows KC learning number which is keep going up (anywhere from 0-6.00) during acceleration and sometimes I see anywhere from 0-2.00 briefly on knock corr column during acceleration. If anyone knows any of these symptoms it would mean a lot. Thanks guys
|
10-18-2020, 02:13 AM | #2 |
Member
Join Date: Mar 2019
Drives: 2017 brz
Location: US
Posts: 26
Thanks: 0
Thanked 9 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
KC learned goes up higher as you step the gas pedal deeper right?
Sent from my SM-N960U1 using Tapatalk |
10-18-2020, 02:38 AM | #3 |
September
Join Date: Jun 2018
Drives: 2015 BRZ
Location: Virginia
Posts: 83
Thanks: 55
Thanked 13 Times in 10 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
|
10-18-2020, 04:24 AM | #4 |
Member
Join Date: Mar 2019
Drives: 2017 brz
Location: US
Posts: 26
Thanks: 0
Thanked 9 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Same here. But without all your engine problems. So maybe it's not the cause of the engine code. Also, the code means you might have faulty o2 sensor. Hmm I'm not sure but I don't think youre knocking. Cuz when ur car knocks, you can tell it's noticable.
Sent from my SM-N960U1 using Tapatalk |
10-18-2020, 06:07 AM | #5 |
Señor Member
Join Date: Aug 2012
Drives: 86 GT/'74 TA22 Celica/Kangaroo
Location: Melbourne, Australia
Posts: 1,706
Thanks: 1,104
Thanked 764 Times in 478 Posts
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
|
Take a log with the OFT and post it in the tuning section. You will soon get the answers you seek.
__________________
1974 TA22 Celica
2013 86 GT |
The Following 2 Users Say Thank You to Turdinator For This Useful Post: | SamtheKorean (10-19-2020), Spuds (10-18-2020) |
10-18-2020, 08:36 PM | #6 |
The Dictater
Join Date: Apr 2017
Drives: '13 Red Scion FRS
Location: MD, USA
Posts: 9,399
Thanks: 26,057
Thanked 12,400 Times in 6,129 Posts
Mentioned: 85 Post(s)
Tagged: 0 Thread(s)
|
Does the IAM drop after a few minutes? Also a log would be great.
|
The Following User Says Thank You to Spuds For This Useful Post: | NoHaveMSG (10-19-2020) |
10-18-2020, 09:02 PM | #7 |
Senior Member
Join Date: Feb 2017
Drives: '13 Whiteout
Location: San Clemente
Posts: 1,491
Thanks: 496
Thanked 1,242 Times in 673 Posts
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
|
I dunno but tell it to use the doorbell next time
|
The Following 8 Users Say Thank You to TommyW For This Useful Post: | humfrz (10-19-2020), JonAvalon (10-18-2020), NoHaveMSG (10-19-2020), SamtheKorean (10-19-2020), soundman98 (10-18-2020), Spuds (10-19-2020), Ultramaroon (10-19-2020), Wally86 (10-19-2020) |
10-19-2020, 12:08 AM | #8 |
Senior Member
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 29,861
Thanks: 28,777
Thanked 31,796 Times in 16,418 Posts
Mentioned: 707 Post(s)
Tagged: 2 Thread(s)
|
|
10-19-2020, 12:47 AM | #9 |
Senior Member
Join Date: Jan 2018
Drives: Crapcan
Location: Oregon
Posts: 11,118
Thanks: 18,090
Thanked 16,253 Times in 7,346 Posts
Mentioned: 106 Post(s)
Tagged: 0 Thread(s)
|
^^^^This. Post a log, be sure to read the sticky's in the software forum, otherwise it will likely be useless.
__________________
"Experience is the hardest kind of teacher. It gives you the test first and the lesson afterward." -Oscar Wilde.
|
The Following 2 Users Say Thank You to NoHaveMSG For This Useful Post: | SamtheKorean (10-19-2020), Spuds (10-19-2020) |
10-19-2020, 10:33 AM | #11 |
September
Join Date: Jun 2018
Drives: 2015 BRZ
Location: Virginia
Posts: 83
Thanks: 55
Thanked 13 Times in 10 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
|
10-19-2020, 10:43 AM | #12 | |
The Dictater
Join Date: Apr 2017
Drives: '13 Red Scion FRS
Location: MD, USA
Posts: 9,399
Thanks: 26,057
Thanked 12,400 Times in 6,129 Posts
Mentioned: 85 Post(s)
Tagged: 0 Thread(s)
|
Quote:
KC learned I believe is persistent across engine shutdown/startup, so those values indicate regions where it has detected knock from sometime between the last time you flashed and now. This indicates that your engine is already reducing timing in that region. So with IAM at 1, and KC Learned at some value, it shows that your engine is not currently knocking, but has knocked at some point in the past. |
|
The Following 2 Users Say Thank You to Spuds For This Useful Post: | NoHaveMSG (10-19-2020), SamtheKorean (10-19-2020) |
10-19-2020, 10:55 AM | #13 | |
September
Join Date: Jun 2018
Drives: 2015 BRZ
Location: Virginia
Posts: 83
Thanks: 55
Thanked 13 Times in 10 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
|
|
10-19-2020, 11:16 AM | #14 | |
The Dictater
Join Date: Apr 2017
Drives: '13 Red Scion FRS
Location: MD, USA
Posts: 9,399
Thanks: 26,057
Thanked 12,400 Times in 6,129 Posts
Mentioned: 85 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Any idea what your ltft is? It changes at different load values (load increases with airflow) so you might need a log to see it. Basically if your o2 sensor is messed up, you are likely to see large + or - values in your fuel trim. |
|
The Following User Says Thank You to Spuds For This Useful Post: | SamtheKorean (10-19-2020) |
|
|
Thread Tools | Search this Thread |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
FR-S engine rebuilt and knocking | DJjoey0812 | Issues | Warranty | Recalls / TSB | 2 | 01-16-2020 06:46 PM |
Rattle/knocking from engine (video) | draculr | Issues | Warranty | Recalls / TSB | 24 | 08-06-2019 07:57 AM |
Knocking Raspy Sound from engine bay | 914_WHITE_FRS | Issues | Warranty | Recalls / TSB | 60 | 05-08-2015 12:30 AM |
loud knocking constant with engine speed | whatsmynameagain | Issues | Warranty | Recalls / TSB | 34 | 12-09-2014 09:58 PM |
Engine knocking after flash | Tenchi | Software Tuning | 10 | 09-25-2014 11:50 PM |