Welcome to the North American Subaru Impreza Owners Club Thursday December 18, 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 > Engine Management & Tuning

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 03-18-2005, 12:32 PM   #1
Skibum4444
Scooby Specialist
 
Member#: 21914
Join Date: Jul 2002
Chapter/Region: NWIC
Location: Des Moines
Vehicle:
2002 WRX/2013 BRZ
05 Legacy GT Wagon

Default AccessPort + Running lean

I have had the AP for about 3 weeks now no problem, untill last night I went on a spirited drive with another WRX in a canyon on a forest service road. Anyway I get back to my house and the WRX is idling like my old camed out VW. I knew something was wrong so I switched the map back to stock. Next time I started it, my Check engine light came on and the car died. I'm running lean says code PO171. The only thing I can figure is that it didnt like the little bit of 87 oct i put in. But I did the math and with the 92 I filled my tank up with I should have the equivilant of 90.5 oct. I've done this before with no harm done. What should I do, The car dosnt idle, I dont want to even try to drive it.
* Registered users of the site do not see these ads.
Skibum4444 is offline   Reply With Quote
Old 03-18-2005, 12:40 PM   #2
timmah
Scooby Specialist
 
Member#: 54203
Join Date: Feb 2004
Chapter/Region: NESIC
Location: Albany, NY
Vehicle:
2011 WRX

Default

so you beat on your car with less than the 91 octane you're supposed to put in it? I use 93 and my car is running the 91 octane map...
timmah is offline   Reply With Quote
Old 03-18-2005, 12:45 PM   #3
Skibum4444
Scooby Specialist
 
Member#: 21914
Join Date: Jul 2002
Chapter/Region: NWIC
Location: Des Moines
Vehicle:
2002 WRX/2013 BRZ
05 Legacy GT Wagon

Default

I wont say I beat on it, I have been much harder on it. I'd say 7/10's. Yeah, its not as if I was trying to save on gas or something my local station was out of 92 and 89 so I put the minimum in I could, then the next day when the I got to a different one I put the 92 in. I completely forgot I put the 87 in cause I never do. When I had the 87 in I ran economy. No I have it back to stock but its still not idleing.
Skibum4444 is offline   Reply With Quote
Old 03-18-2005, 01:41 PM   #4
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Default

sounds like o2 sensor (front) or maf sensor issue.
ride5000 is offline   Reply With Quote
Old 03-18-2005, 02:03 PM   #5
mistaare
Scooby Specialist
 
Member#: 50439
Join Date: Dec 2003
Location: da' burgh
Vehicle:
04 wrx stg 2

Default

post your findings please!

for your fellow AP users
mistaare is offline   Reply With Quote
Old 03-18-2005, 02:11 PM   #6
Skibum4444
Scooby Specialist
 
Member#: 21914
Join Date: Jul 2002
Chapter/Region: NWIC
Location: Des Moines
Vehicle:
2002 WRX/2013 BRZ
05 Legacy GT Wagon

Default

Its bad gas i've decided. I flashed my base map to stock, put some octane booster and I made it down to my gas station put 6 gallon of 92.. Its running better, no stalling but its misfiring on every cyclinder. So I figure once the crappy gas is out it should run fine. I had water in my gas before so I've had similar problems with my car. I think my car dosnt like any change at all when it comes to its gas. I swear it runs better on 76 then chevron or arco.
Skibum4444 is offline   Reply With Quote
Old 03-18-2005, 07:06 PM   #7
Jon [in CT]
*** Banned ***
 
Member#: 2992
Join Date: Nov 2000
Chapter/Region: NESIC
Location: Connecticut, USA
Vehicle:
02 WRX Sedan
Silver

Default

Low octane gas doesn't cause idle or misfire problems - it only causes knock problems. You've probably got a vacuum leak.
Jon [in CT] is offline   Reply With Quote
Old 03-18-2005, 07:13 PM   #8
clamdip
Scooby Specialist
 
Member#: 18709
Join Date: May 2002
Default

what map are you running? all of cobb's tuned maps are tuned for 91 and 92 octane. going below that could be bad. i asked Trey about this before i got my stage 2 map and since i only can ge 92 octane where i live, he said that the 91 octane map is the best and he wouldn't recommend getting the 93 octane map. it's okay to go over the specific map, but going under could be detrimental to the engine. i this case, you went below and using 87 octane even for the stock map could be bad. this is because the stock WRX map is pretty lean at high rpm's (some people have seen high EGT's with the stock map). now, if you get the cobb map, they run very aggressive maps and very lean for turbo spool and top end power. next time, be careful.
clamdip is offline   Reply With Quote
Old 03-18-2005, 07:42 PM   #9
Skibum4444
Scooby Specialist
 
Member#: 21914
Join Date: Jul 2002
Chapter/Region: NWIC
Location: Des Moines
Vehicle:
2002 WRX/2013 BRZ
05 Legacy GT Wagon

Default

currently its running crappy under 1750 then its pulls fine. A subaru tech thinks its bad gas. Its stock.
Skibum4444 is offline   Reply With Quote
Old 03-18-2005, 08:20 PM   #10
clamdip
Scooby Specialist
 
Member#: 18709
Join Date: May 2002
Default

bad gas would probably be the call here. bad gas=knock in most cases.
clamdip 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
sti car runs lean wont stay running =( with (video!) sti3573 Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) 28 12-16-2009 02:24 PM
05WRX Accessport AP1 - running lean? .chris. AccessPort 0 10-16-2009 08:09 PM
wrx runs better in warm weather. Am i running lean? DLBWRXR Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 7 01-16-2006 10:59 AM
Running lean on top end ('98 vs. '99)? Force[FED] Legacy Forum 3 01-29-2001 02:00 PM
How Do U Know if Your Car is Running Lean? Xscreamer General Forum Archive 7 08-29-2000 10:45 PM


All times are GMT -4. The time now is 07:05 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.