|
Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
|
Thread Tools | Search this Thread |
11-13-2018, 01:31 PM | #15 |
Senior Member
Join Date: Jul 2018
Drives: 2014 Scion FR-S
Location: Sarasota, FL
Posts: 427
Thanks: 499
Thanked 276 Times in 178 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
|
Start data logging, turn on all cylinder misfire channels, watch AFR
__________________
|
02-08-2020, 03:56 PM | #16 |
Senior Member
Join Date: Sep 2012
Drives: Whiteout FR-S, Evo 8 RS
Location: Kissimmee FL.
Posts: 242
Thanks: 131
Thanked 42 Times in 32 Posts
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
|
No answer huh? Same thing just happened to me after popping an intercooler pipe. Limped home at 2000 rpm put the pipe back on, but now it won't go passed 5800-6000 rpm without misfiring. So far only tried reseting ECU because I thought maybe the trims went all out of whack. NOPE! Time to log.
|
02-08-2020, 04:02 PM | #17 |
Rust bucket enthusiast
Join Date: Feb 2017
Drives: 2013 Turbo Firestorm FRS
Location: Vermont
Posts: 3,933
Thanks: 3,200
Thanked 4,095 Times in 2,045 Posts
Mentioned: 31 Post(s)
Tagged: 0 Thread(s)
|
@D-VO
This is an issue with a coilpack, guaranteed. I had this come up randomly recently. I replaced the top coilpack on the passenger side (following the misfire code it threw) and the problem went away immediately. |
The Following User Says Thank You to DarkPira7e For This Useful Post: | D-VO (03-19-2020) |
02-08-2020, 08:22 PM | #18 |
Senior Member
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,196
Thanks: 500
Thanked 1,067 Times in 775 Posts
Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
|
log and check for misfire and look at injection DI end to spark, the value in ms at the rpm you get the problem, but I also think it s coilpack(s)
Last edited by tomm.brz; 02-08-2020 at 08:42 PM. |
The Following User Says Thank You to tomm.brz For This Useful Post: | D-VO (03-19-2020) |
02-08-2020, 08:46 PM | #19 |
Senior Member
Join Date: May 2014
Drives: 2013 Asphalt FRS
Location: San Antonio
Posts: 994
Thanks: 693
Thanked 695 Times in 417 Posts
Mentioned: 22 Post(s)
Tagged: 1 Thread(s)
|
If it was a coil or fuel issue it should throw a misfire cel. This is not happening so I would look at the tune and make sure. If you have a old tune that's for FI try it and see if it changes
__________________
Instagram FT86PROJECT9S
Facebook FT86PROJECT9S 710whp |
The Following User Says Thank You to FRS Justin For This Useful Post: | D-VO (03-19-2020) |
02-08-2020, 08:49 PM | #20 |
Rust bucket enthusiast
Join Date: Feb 2017
Drives: 2013 Turbo Firestorm FRS
Location: Vermont
Posts: 3,933
Thanks: 3,200
Thanked 4,095 Times in 2,045 Posts
Mentioned: 31 Post(s)
Tagged: 0 Thread(s)
|
Just don't forget that the tuner could've disabled the CEL. Not that they should've but you never know.
|
02-09-2020, 01:13 AM | #21 |
Banned
Join Date: Dec 2013
Drives: FT86
Location: Australia
Posts: 7,998
Thanks: 1,035
Thanked 4,987 Times in 2,981 Posts
Mentioned: 598 Post(s)
Tagged: 2 Thread(s)
|
Check it not an overboost fuel cut set up in tune, if map sensor goes bad it can trip early
|
The Following 2 Users Say Thank You to steve99 For This Useful Post: | D-VO (02-17-2020), FRS Justin (02-09-2020) |
02-14-2020, 10:49 PM | #22 |
Senior Member
Join Date: May 2012
Drives: 2013 Series 10 6MT FR-S
Location: Moreno Valley, CA
Posts: 5,529
Thanks: 1,999
Thanked 2,013 Times in 1,457 Posts
Mentioned: 72 Post(s)
Tagged: 0 Thread(s)
|
Car may not throw a cel but it could still misfire.... Check for dtcs. When I was dealing with a idle lean condition due to tune, I would not always pop a cel but it would log a dtc and car would drive wired till clear. What AFR are you seeing at WOT, but I would get your car checked by your tuner
Sent from my GM1915 using Tapatalk
__________________
2013 Series 10 FRS #553
RCE T2's, SPC LCAs -4/2.6 camber JDL 4-2-1 EL, FP and OP, Tuned by Zach@CSG on e85 RR Wilwood Front/Rear Sport BBK, Motul 600 Fluid ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's |
02-17-2020, 01:14 AM | #23 |
Senior Member
Join Date: Sep 2012
Drives: Whiteout FR-S, Evo 8 RS
Location: Kissimmee FL.
Posts: 242
Thanks: 131
Thanked 42 Times in 32 Posts
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
|
@DarkPira7e I'm getting no misfire codes. Mine are all still enabled except for the rear O2 and MAP sensor SES because I'm using an OMNI 4 BAR MAP sensor.
@steve99 How can I test the MAP sensor? I'm logging the boost level with the MAP and it's still climbing as it did in previous logs. The only datalog line that I see changing is the timing; it drops by 1 - 2 degrees during the misfire and AFR's start going up to a maximum of 12.8. It almost feels like its hitting a rev limiter. |
02-18-2020, 09:30 AM | #24 |
Senior Member
Join Date: Sep 2012
Drives: Whiteout FR-S, Evo 8 RS
Location: Kissimmee FL.
Posts: 242
Thanks: 131
Thanked 42 Times in 32 Posts
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
|
Also, when the coolant temp is low (not sure the exact number) the misfire happens @4500rpm
|
02-18-2020, 09:37 AM | #25 | |
Senior Member
Join Date: May 2012
Drives: 2013 Series 10 6MT FR-S
Location: Moreno Valley, CA
Posts: 5,529
Thanks: 1,999
Thanked 2,013 Times in 1,457 Posts
Mentioned: 72 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Also are you logging misfires counts? He showed me a table where in the hire rpms it requires 20ish to long a cell and at low loads it's was near 90!!! Yikes Sent from my GM1915 using Tapatalk
__________________
2013 Series 10 FRS #553
RCE T2's, SPC LCAs -4/2.6 camber JDL 4-2-1 EL, FP and OP, Tuned by Zach@CSG on e85 RR Wilwood Front/Rear Sport BBK, Motul 600 Fluid ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's |
|
The Following User Says Thank You to jflogerzi For This Useful Post: | D-VO (02-18-2020) |
02-18-2020, 01:15 PM | #26 |
Senior Member
Join Date: Sep 2012
Drives: Whiteout FR-S, Evo 8 RS
Location: Kissimmee FL.
Posts: 242
Thanks: 131
Thanked 42 Times in 32 Posts
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
|
Wow! Well I'm the tuner and I never programmed such a thing. When I get home I have to look at the log again to see the oil temps. Good call!
|
02-18-2020, 05:08 PM | #27 | |
Banned
Join Date: Dec 2013
Drives: FT86
Location: Australia
Posts: 7,998
Thanks: 1,035
Thanked 4,987 Times in 2,981 Posts
Mentioned: 598 Post(s)
Tagged: 2 Thread(s)
|
Quote:
Also make sure it reads close to 14psi or 1 bar with engine off igniiton on |
|
02-19-2020, 12:37 AM | #28 |
Senior Member
Join Date: Sep 2012
Drives: Whiteout FR-S, Evo 8 RS
Location: Kissimmee FL.
Posts: 242
Thanks: 131
Thanked 42 Times in 32 Posts
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
|
Ok. Maybe I can put the stock one back on for testing since the problem does happen right around 8psi
|
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Pops/Crackle Tune do damage to your brz? | Jcas | Software Tuning | 79 | 01-26-2022 10:29 AM |
OFT Pops and Crackle Tune problem V4 | niceman | Software Tuning | 8 | 09-16-2018 09:27 PM |
OFT Backfire/Pops help | DaveyBonesJones | Southern California | 8 | 08-27-2018 11:53 AM |
OFT Pops and Crackle Tune just stops working after a while? | stig_iv | Software Tuning | 12 | 08-21-2018 05:30 PM |