Welcome to the North American Subaru Impreza Owners Club Wednesday July 30, 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 > Normally Aspirated 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 02-05-2008, 10:09 AM   #1
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default Any guesses for these CEL's?

P0301 (Cyl. 1 misfire)
P0302 (Cyl. 2 misfire)
P0139 (Rear O2 slow response)
P0420 (Catalyst effeciency below expected)

Car runs fine, and even gets pretty reasonable mileage considering how heavy my right foot is.

Mods on car now: None.
Mods on car in past: Turbo kit, standalone EMS, etc.

So far I think I'm narrowing it down to:
1 - Bad rear O2
2 - Major exhaust leak (don't hear anything...?)
3 - Wiring issues
* Registered users of the site do not see these ads.
8Complex is offline   Reply With Quote
Old 02-05-2008, 10:38 AM   #2
legacy1907
Scooby Specialist
 
Member#: 94024
Join Date: Aug 2005
Chapter/Region: South East
Location: Raleigh, NC
Vehicle:
05 WRX CGM
95 YJ Flat black

Default

possibly bad 02 sensor or even a bad cat for the last 2 codes....plugs/wires/coilpack for the misfires maybe
legacy1907 is offline   Reply With Quote
Old 02-05-2008, 10:51 AM   #3
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

Well, the wires were replaced sometime in the last year, as well as the coilpack due to some bared wires shorting out.

I'm wondering if there is any chance that my loose motor is causing everything... leakdown was last tested to be 15/15/10/20 on a warmed motor... I know it's bad, but it still runs good and a swap is on the way. *shrug*
8Complex is offline   Reply With Quote
Old 02-05-2008, 12:56 PM   #4
obs2008
Scooby Newbie
 
Member#: 163068
Join Date: Oct 2007
Location: Jersey
Vehicle:
08 outback sport

Default

Quote:
Originally Posted by 8Complex View Post
Well, the wires were replaced sometime in the last year, as well as the coilpack due to some bared wires shorting out.

I'm wondering if there is any chance that my loose motor is causing everything... leakdown was last tested to be 15/15/10/20 on a warmed motor... I know it's bad, but it still runs good and a swap is on the way. *shrug*
you mean 150/150/100/200?
obs2008 is offline   Reply With Quote
Old 02-05-2008, 02:01 PM   #5
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

Quote:
Originally Posted by obs2008 View Post
you mean 150/150/100/200?
Nope, I mean percent... and actually, I mixed them up... #1 leaks 15%, #2 leaks 15%, #3 leaks 20%, and #4 leaks 10%. I know, it's a bit of a mess.
8Complex is offline   Reply With Quote
Old 02-05-2008, 02:03 PM   #6
gtlegs
Scooby Newbie
 
Member#: 84605
Join Date: Apr 2005
Vehicle:
05 Legacy GT

Default

My guess... Bad O2 running rich... causing missfires... but thats just an off the wall guess.
gtlegs is offline   Reply With Quote
Old 02-05-2008, 09:22 PM   #7
RaceFaceXC
NASIOC Supporter
 
Member#: 165749
Join Date: Dec 2007
Chapter/Region: South East
Location: stupid Florida
Vehicle:
2007 No YELLING
on the bus!

Default

yeah, fix the o2 first since you will have to anyway with the new motor. then the cat if you still get the o2/cat below efficiency codes... that might fix your misfires if they are causing a rich mixture. if not, then wait for the motor swap and go from there. seems the most logical $ wise and time wise since you are planning a motor swap anyway and need to have good o2 sensors and a working cat when you get the new motor.
RaceFaceXC is offline   Reply With Quote
Old 02-05-2008, 09:24 PM   #8
RaceFaceXC
NASIOC Supporter
 
Member#: 165749
Join Date: Dec 2007
Chapter/Region: South East
Location: stupid Florida
Vehicle:
2007 No YELLING
on the bus!

Default

maybe do a o2 sensor resistance test first to avoid replacing a possible good o2 sensor for no reason? just an idea. what motor you swapping in?
RaceFaceXC is offline   Reply With Quote
Old 02-05-2008, 10:49 PM   #9
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

Well, a little more backinfo... I'm trying to get the car to pass emissions testing before the end of the month. Not going to happen if I have to wait for a swap. Unfortunately, to get my license plate renewed, I need to pass the emissions test. :-/

I am not sure how to do a resistance test... is it described in the factory service manuals? I believe a friend has my set, but I'll have to give him a call to get them back ASAP.



Now on to this evening's results. I had pulled the ECU plugs to reset it for about an hour, and went on a few errands. Probably less than 10 minutes each, but no CEL's just yet. I have to admit, I'm tempted to run to the emissions test facility over lunch tommorow and see if I pass -- which'll only happen if all the readyness monitors have passed.
8Complex is offline   Reply With Quote
Old 02-05-2008, 11:06 PM   #10
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

Almost forgot... I have a WRX swap almost all gathered in pieces ready to go in, but I need a driveline solution, and I need to do a TON of wiring. Plus, I have to open up and check out the motor... and I have a possibility to pick up an EJ22T.
8Complex is offline   Reply With Quote
Old 02-07-2008, 02:44 PM   #11
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

Quote:
Originally Posted by 8Complex View Post
Now on to this evening's results. I had pulled the ECU plugs to reset it for about an hour, and went on a few errands. Probably less than 10 minutes each, but no CEL's just yet. I have to admit, I'm tempted to run to the emissions test facility over lunch tommorow and see if I pass -- which'll only happen if all the readyness monitors have passed.
1-1/2 days later there was still no light this morning, so I decided to take a chance and bring it in. I PASSED THE TEST!!! (Illinois just uses a plug-in readyness check test)

Best news so far yet this year. I really have to get on this swap, but thanks for the suggestions everyone, thankfully it was just the simplest thing that helped out.
8Complex is offline   Reply With Quote
Old 02-17-2008, 09:24 PM   #12
seherman
Scooby Newbie
 
Member#: 172084
Join Date: Feb 2008
Cool CEL codes

I've been reading this thread because I'm getting ready to do battle with numerous CEL occurrances and an intermittent engine miss/stutter/buck on the 02 outback wagon we have. Is there a master list of CEL codes for this vehicle? Thanks!
seherman is offline   Reply With Quote
Old 02-17-2008, 10:38 PM   #13
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

I typically just search for each CEL code when it comes up (P#### format on google). I've had a good bit of experience with other codes (and specifically with most of these same codes), so it's pretty easy to figure out.


BTW, still no CEL back yet. /me knocks on wood
8Complex is offline   Reply With Quote
Old 02-18-2008, 12:34 AM   #14
ejicon
Scooby Guru
 
Member#: 2452
Join Date: Sep 2000
Chapter/Region: SCIC
Location: Burbank,California, USA
Vehicle:
08 2.5 WRX
WRB Mica

Default

P0420 (Catalyst effeciency below expected)

I get this one call the time with my Cobb Headers installed. Apparently there's too much cold air passing through.
I've also been told that without cobb headers, P0420 means your cat is done.
I've also been told that one may need a new 02 sensor with P0420. I'm not sure which one is correct. I'm no help.. sorry =)
ejicon is offline   Reply With Quote
Old 02-18-2008, 09:10 AM   #15
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

Hey, got my CEL back this morning. FINALLY... I was starting to feel naked without it.


P0420 is typically caused with headers because it cools the air far more than expected. I am pretty sure header wrap will fix that.
8Complex is offline   Reply With Quote
Old 02-18-2008, 10:22 AM   #16
jamesfacts
NASIOC Supporter
 
Member#: 51282
Join Date: Dec 2003
Chapter/Region: Tri-State
Location: Brooklyn NYC / Danbury CT
Vehicle:
98 RS
black & blue from parking

Default

No reason you couldn't have a cel-free wrx swap.
jamesfacts is offline   Reply With Quote
Old 02-18-2008, 11:50 AM   #17
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

Quote:
Originally Posted by americanyouth View Post
No reason you couldn't have a cel-free wrx swap.
Indeed. All I need at this point is patience for the wiring, to give in to the insane prices of gaskets (which are absolutely ridiculous), and some sort of drivetrain solution. I've got all the pieces just sitting around.
8Complex is offline   Reply With Quote
Old 02-18-2008, 12:03 PM   #18
Tim Sanderson
Scooby Guru
 
Member#: 6486
Join Date: May 2001
Chapter/Region: MWSOC
Location: S.E. wisconsin
Vehicle:
00 Impreza 2.5 RS
Blue Ridge Pearl

Default

Unless you have a known problem the rs drivetrain can handle a swap.
Tim Sanderson is offline   Reply With Quote
Old 02-18-2008, 12:06 PM   #19
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

Plenty of known problems, actually. Rear and center diffs are pretty much open since I have beaten them so bad, and I have had a horrible bearing whine (I think) from the trans for about 16k now. Funny part is, it'll take absolutely every ounce of beating I can throw at it without an issue... maybe I've just trained myself over the years to drive with too much mechanical sympathy. *shrug*
8Complex 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
any way to read cel's manually? cleans13 Service & Maintenance 1 03-11-2009 12:47 PM
Is there any way for me to get rid of these CEL's? Hites Normally Aspirated Powertrain 18 10-03-2007 03:45 PM
Guess what kind of digicam I used for these shots mattjk Off-Topic 19 11-11-2004 02:51 PM
Need Guesses as to WHP for these Mods tubbytreats Factory 2.0L Turbo Powertrain 4 06-17-2004 12:17 PM
Any Minneapolis ppl get CEL's in their my02 wrx yet? WRXMod Mid West Subaru Owners Club Forum -- MWSOC 9 07-31-2001 02:47 AM


All times are GMT -4. The time now is 11:59 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.