|
![]() |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Scooby Newbie
Member#: 498388
Join Date: Feb 2019
Vehicle:2007 STI Obsidian Black Pearl |
![]() upgraded my fuel system to flex fuel and just running the base map my tuner sent me for 91 before we go into e85, car will crank and run for 1-2 seconds very roughly, if i give it gas after starting i can keep it running and the gas is somewhat to pretty responsive but as soon as i try to idle it shuts down. i was giving it that gas to keep it running for a minute and engine light came on and showed up as all four cylinders misfiring, and and PFFFE code or something
AF correction and learn seem to be at 0 which seems off to me. im thinking it maybe a problem with the tune or maybe even a vacuum leak? but this far ive checked everything and theres nothing that significant. ive had the entire tmic off and it would start and run. if anyone has any ideas thatd be great
* Registered users of the site do not see these ads.
|
![]() |
![]() |
![]() |
#2 |
Scooby Specialist
Member#: 438620
Join Date: Jan 2016
Chapter/Region:
MWSOC
Location: Des Moines, IA
Vehicle:2006 WRX Sedan CGM |
![]() o2 sensor unplugged? ground wire/strap not attached correctly?
|
![]() |
![]() |
![]() |
#3 |
Scooby Newbie
Member#: 459312
Join Date: Dec 2016
Chapter/Region:
MWSOC
Vehicle:2004 WRX Wagon Hybrid 6MT Swapped WRB |
![]() What’s your fuel system pressure? Is it dropping after you cycle the key on?
It should hold pressure for several hours should be 43psi or somewhere there in if memory serves |
![]() |
![]() |
![]() |
#4 |
Scooby Newbie
Member#: 498388
Join Date: Feb 2019
Vehicle:2007 STI Obsidian Black Pearl |
![]() Rear o2 is not plugged in at the moment, I had to order a new wideband and I'm going to tap the old signal wire so it reads from. there.
Also I don't have the old sensor from The secondary air pump delete but it's not throwing the code at the moment, i was thinking it could be changing the timing from limp mode, but it was running fine before. but maybe with the new tune it's throwing it off that much. |
![]() |
![]() |
![]() |
#5 |
Scooby Newbie
Member#: 498388
Join Date: Feb 2019
Vehicle:2007 STI Obsidian Black Pearl |
![]() Could you possibly send a picture of how your ground wire strap is connected? I removed mine and just put it on the chassis where the ebcs bolts on and the other end on the top of my intake manifold??? Could this be my issue???
|
![]() |
![]() |
![]() |
#6 |
Scooby Newbie
Member#: 363007
Join Date: Jul 2013
Chapter/Region:
MWSOC
Location: MO
Vehicle:2008 STI Black |
![]() What fuel components did you change? Are AF correction and learning 0 in closed loop? Do you have a fuel pressure sensor? Log?
|
![]() |
![]() |
![]() |
#7 | |
Scooby Specialist
Member#: 29292
Join Date: Nov 2002
Chapter/Region:
SCIC
Location: Orange County CA
Vehicle:2004 WRX wagon silver |
![]() Quote:
|
|
![]() |
![]() |
![]() |
#8 |
Scooby Newbie
Member#: 498388
Join Date: Feb 2019
Vehicle:2007 STI Obsidian Black Pearl |
![]() hey guys i figured out the issue, somehow the turbo inlet was damaged and there was a significant vacuum leak. i wasn't aware that vacuum leaks could lead to misfires, but this seems like it was my issue, i wasn't able to tell until i got it to idle long enough that i could go under the hood and listen, heard a lot of air running in a spot it shouldn't have been so i sprayed some carb cleaner and the idle changed consistently.
|
![]() |
![]() |
![]() |
#9 |
NASIOC Supporter
Member#: 487
Join Date: Nov 1999
Chapter/Region:
TXIC
Location: Greatwood/Sgrlnd
Vehicle:1998 /2005 STunIcorn Acadia Green RS-T |
![]() Your the man for posting the found issue!!
|
![]() |
![]() |
![]() |
#10 | |
Scooby Newbie
Member#: 401876
Join Date: Sep 2014
Chapter/Region:
MWSOC
Location: MO
Vehicle:2008 WRX Satin White Pearl |
![]() Quote:
|
|
![]() |
![]() |
![]() |
Thread Tools | |
Display Modes | |
|
|