Welcome to the North American Subaru Impreza Owners Club Wednesday July 23, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Factory 2.5L Turbo Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 12-25-2012, 12:49 PM   #1
justinxecushyn
Scooby Specialist
 
Member#: 190615
Join Date: Oct 2008
Chapter/Region: South East
Default Idle drop and occasionally dies

Built Morrie ej257. Cams, dom 2.5, fmic, 3inch tbe.

It's been driving like crap for a week or so. Speed dencity tuned.

Here's a video of it with a small rev.

* Registered users of the site do not see these ads.

Last edited by justinxecushyn; 12-26-2012 at 12:18 PM.
justinxecushyn is offline   Reply With Quote
Old 12-25-2012, 02:53 PM   #2
Tripintaz
Scooby Specialist
 
Member#: 245218
Join Date: Apr 2010
Chapter/Region: South East
Location: FL
Vehicle:
2013 STI Limited

Default

Way to vague. Got any logs when it stalls? Who tuned the car for the cams?
Tripintaz is offline   Reply With Quote
Old 12-25-2012, 03:42 PM   #3
justinxecushyn
Scooby Specialist
 
Member#: 190615
Join Date: Oct 2008
Chapter/Region: South East
Default

I need to upload some logs. I took a quick one while driving. I don't think it's the tune. I'm going clean MAF etc to see if anything there could be the issue.

Last edited by justinxecushyn; 07-11-2013 at 09:17 AM.
justinxecushyn is offline   Reply With Quote
Old 12-25-2012, 05:02 PM   #4
DHRDAN
Scooby Specialist
 
Member#: 204358
Join Date: Feb 2009
Chapter/Region: SCIC
Location: Santa Paula, CA.
Vehicle:
01 2.5RS W/ EJ257
Black

Default

ask your tuner.


we know nothing.
DHRDAN is offline   Reply With Quote
Old 12-25-2012, 05:50 PM   #5
jthatch12
Scooby Specialist
 
Member#: 321715
Join Date: May 2012
Chapter/Region: Tri-State
Location: Philly/SJ
Vehicle:
03 Big 16G WRX
PSM

Default

Quote:
Originally Posted by justinxecushyn View Post
I need to upload some logs. I took a quick one while driving. Doug@Topspeed tuned it. I don't think it's the tune. I'm going clean MAF etc to see if anything there could be the issue.
If its speed density tuned then the MAF shouldn't matter
jthatch12 is offline   Reply With Quote
Old 12-26-2012, 07:33 AM   #6
Tripintaz
Scooby Specialist
 
Member#: 245218
Join Date: Apr 2010
Chapter/Region: South East
Location: FL
Vehicle:
2013 STI Limited

Default

Quote:
Originally Posted by justinxecushyn View Post
I need to upload some logs. I took a quick one while driving. Doug@Topspeed tuned it. I don't think it's the tune. I'm going clean MAF etc to see if anything there could be the issue.
I thought you said you were speed density tuned? Why bother with the MAF if that is the case. You are way off.
Tripintaz is offline   Reply With Quote
Old 12-26-2012, 07:36 AM   #7
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

has it got a vac leak??

and if doug tuned it...call him and ask him
Uncle Scotty is offline   Reply With Quote
Old 12-26-2012, 08:36 AM   #8
WRXSteye20008
Scooby Specialist
 
Member#: 175565
Join Date: Mar 2008
Chapter/Region: MAIC
Location: Lancaster, PA
Vehicle:
2014 Sport Premium
Past: 351awhp Sti

Default

Mine used to do this, it would idle around 900 and then just shut off, usually when coming to stops. I had an AP at the time and raised my idle by 300 and it solved the issue, but later found out the MAF needed a cleaning. That said, call your tuner
WRXSteye20008 is offline   Reply With Quote
Old 12-26-2012, 08:57 AM   #9
xDRAN0x
Scooby Newbie
 
Member#: 163085
Join Date: Oct 2007
Chapter/Region: E. Canada
Location: Montreal, QC
Vehicle:
2009 3.0R Legacy
Urban gray

Default

had that on my 07 WRX when the adjustable wastegate was opening just way too much, just screwed it back properly and it went away
xDRAN0x is offline   Reply With Quote
Old 12-26-2012, 09:00 AM   #10
tuzzio
Scooby Specialist
 
Member#: 292532
Join Date: Aug 2011
Chapter/Region: NESIC
Location: Southwick, Ma
Vehicle:
05 STI
PSM

Default

Check your fmic piping.
tuzzio is offline   Reply With Quote
Old 12-26-2012, 12:16 PM   #11
justinxecushyn
Scooby Specialist
 
Member#: 190615
Join Date: Oct 2008
Chapter/Region: South East
Default

Contacting Doug would be the last step for now i'm not convinced that it's the tune yet. Checking the piping, couplers, and any vac leaks.

I have a log but i'm not sure how to post it.
justinxecushyn is offline   Reply With Quote
Old 12-26-2012, 08:13 PM   #12
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

Quote:
Originally Posted by xDRAN0x View Post
had that on my 07 WRX when the adjustable wastegate was opening just way too much, just screwed it back properly and it went away

unpossible....totally and completely unpossible

not in this galaxy, no

adjustable kiddie f00-f00 valve....OK....yeah

wastegate???

not
Uncle Scotty is offline   Reply With Quote
Old 12-27-2012, 09:00 AM   #13
roadtrip1098
Scooby Newbie
 
Member#: 185688
Join Date: Jul 2008
Chapter/Region: NESIC
Location: Maine
Vehicle:
2006 STi
WR Blue

Default

My guess is an intake leak, small one at that. If you can't find one, you may want to do the compression and leakdown tests. If all that is good, then bother your tuner.
roadtrip1098 is offline   Reply With Quote
Old 12-27-2012, 01:16 PM   #14
justinxecushyn
Scooby Specialist
 
Member#: 190615
Join Date: Oct 2008
Chapter/Region: South East
Default

Quote:
Originally Posted by roadtrip1098 View Post
My guess is an intake leak, small one at that. If you can't find one, you may want to do the compression and leakdown tests. If all that is good, then bother your tuner.
I'm thinking that too. It's probably a leak somewhere. I hear a hollow sound breifly if I tap/rev the motor to 1500-1700k
justinxecushyn is offline   Reply With Quote
Old 12-28-2012, 04:04 PM   #15
Strider327
Scooby Specialist
 
Member#: 131280
Join Date: Nov 2006
Chapter/Region: BAIC
Location: Northern California Hayward
Vehicle:
2004 Impreza WRX
WRB

Default

Did you fix the issue?
Strider327 is offline   Reply With Quote
Old 12-28-2012, 04:19 PM   #16
xDRAN0x
Scooby Newbie
 
Member#: 163085
Join Date: Oct 2007
Chapter/Region: E. Canada
Location: Montreal, QC
Vehicle:
2009 3.0R Legacy
Urban gray

Default

Quote:
Originally Posted by Uncle Scotty View Post
unpossible....totally and completely unpossible

not in this galaxy, no

adjustable kiddie f00-f00 valve....OK....yeah

wastegate???

not
yes its the blowoff valve indeed, not the waste gate. Good point. It was an AP I think.
xDRAN0x is offline   Reply With Quote
Old 12-28-2012, 08:28 PM   #17
noonagon
Scooby Specialist
 
Member#: 159745
Join Date: Sep 2007
Chapter/Region: South East
Location: Daphne, AL
Vehicle:
2007 drunkman tuned
mega meth

Default

Quote:
Originally Posted by justinxecushyn View Post
I need to upload some logs. I took a quick one while driving. Doug@Topspeed tuned it. I don't think it's the tune. I'm going clean MAF etc to see if anything there could be the issue.
noonagon is offline   Reply With Quote
Old 12-28-2012, 09:20 PM   #18
justinxecushyn
Scooby Specialist
 
Member#: 190615
Join Date: Oct 2008
Chapter/Region: South East
Default

Quote:
Originally Posted by Strider327 View Post
Did you fix the issue?
Not yet. Parked it and will be getting on with troubleshooting soon.
justinxecushyn is offline   Reply With Quote
Old 12-29-2012, 12:17 PM   #19
Tripintaz
Scooby Specialist
 
Member#: 245218
Join Date: Apr 2010
Chapter/Region: South East
Location: FL
Vehicle:
2013 STI Limited

Default

Have you checked for boost leaks yet or if any vacuum lines popped off any sensors?
Tripintaz is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 04:04 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.