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 2.0L 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 01-21-2011, 10:31 AM   #301
Izero
Scooby Specialist
 
Member#: 121332
Join Date: Jul 2006
Chapter/Region: Tri-State
Location: Northern Jersey
Vehicle:
2004 STi
Platinum Silver Metallic

Default

well just got a call from my shop yesterday, you guys wont believe what it is...

The gasket on one of the TGV's blew out completely... don't ask me how a new gasket blew out... it just did, so $280 and I'll have my car back this afternoon. I probably could have fixed it myself but I am in my final semester of college... so not exactly as much free-time as I'd like... lol

So to those of you who have tried everything else check your TGVs!!!
* Registered users of the site do not see these ads.
Izero is offline   Reply With Quote
Old 01-21-2011, 01:46 PM   #302
txl146
Scooby Guru
 
Member#: 32459
Join Date: Feb 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX VF34
Junior Tuned 301whp

Default

Izero, did you have any idle problem?
txl146 is offline   Reply With Quote
Old 01-21-2011, 03:10 PM   #303
Vlad
Scooby Specialist
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX
Powered by Sti V9 Spec C

Default

gasket above or below TGV?
Vlad is offline   Reply With Quote
Old 01-21-2011, 03:17 PM   #304
txl146
Scooby Guru
 
Member#: 32459
Join Date: Feb 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX VF34
Junior Tuned 301whp

Default

I had gasket below replaced, but thought gasket above rarely fails.
txl146 is offline   Reply With Quote
Old 01-21-2011, 06:29 PM   #305
Vlad
Scooby Specialist
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX
Powered by Sti V9 Spec C

Default

Yeh, I replaced below, kept the above as well.
Vlad is offline   Reply With Quote
Old 01-24-2011, 10:55 AM   #306
Izero
Scooby Specialist
 
Member#: 121332
Join Date: Jul 2006
Chapter/Region: Tri-State
Location: Northern Jersey
Vehicle:
2004 STi
Platinum Silver Metallic

Default

I believe it was below... but I am not 100% sure... All I know is I replaced both and called it a day... just needed the car back on the road....

It's all good now.... cept my A/Fs at crusing are a little funny, prolly b/c we rescaled the MAF and cleaned it while it was having this problem... time to re-tune now... :-/
Izero is offline   Reply With Quote
Old 02-01-2011, 12:16 PM   #307
StreetKa
Scooby Newbie
 
Member#: 272031
Join Date: Jan 2011
Chapter/Region: Tri-State
Vehicle:
2003 CL Type S
NBP

Default

I was looking at the 04 wrx wagon for sale yesterday with 180k miles on it it had p0171 code as owner claimed it was due to fuel pump not pumping enough fuel which i think is bs. Car is mostly stock has stock turbo catback bov and it was rebuilt with manley pistons. He is running 16 psi and car felt pretty weak comparing to my friend's wrx. Guy doesnt seem to be too bright what he is doing my question is: isnt it not safe to drive a car like this ? If the afr is messed up ? He doesnt have afr gauge but thats what i think it is? Thanks.

Jake
StreetKa is offline   Reply With Quote
Old 02-01-2011, 01:29 PM   #308
05Scooby
Scooby Specialist
 
Member#: 153216
Join Date: Jul 2007
Chapter/Region: Tri-State
Location: Langhorne, PA
Vehicle:
2005 WRX stage 3
CGM

Default

Quote:
Originally Posted by UURRXX_Ash View Post
wow... great post you guys... I had the code a little before I was going to put my car back to stock from stage 4 for the ref. I figured it probly wouldn't come back and 42 miles later normal cruising and the sucker popped up. Car runs fine. Slow by comparison of coarse

I will go down the list and post results. sounds like vacume lines and injector cleaner is a solid fist step. Thank you very much for all this info... There's so many possibilities I had no idea where to start.

Ash


Start with the easy stuff first.
05Scooby is offline   Reply With Quote
Old 02-01-2011, 02:12 PM   #309
Darryl
Scooby Specialist
 
Member#: 1626
Join Date: Jun 2000
Location: Cincinnati, Planet Mongo
Vehicle:
'02 RevLab 11.5:1
Platinum Silver

Default that's an odd code to nail down

StreetKa
I would not be too interested in buying that car from what you say about it. I think you are rightfully hesitant: "mostly stock, rebuilt with Manely pistons". But that's just me.
As for the p0171, it's an odd one to track down. I had my front O2 sensor replaced and that didn't fix it. I cleaned the MAF and that didn't fix it. I checked for bad vacuum hoses, and found none. So I spent $50.00 and bought a cheap OBDII reader and just started clearing the code. Odd thing is the code would stay off for weeks then pop up again. I'd clear it, and wait for the next one to light off. Then it got to where I'd have to reset it like once a week. But now it's been six months since I've seen it. Go figure. It never did effect the drive-ability of the car; no change in startup, idling, power or fuel economy. Stranger than fiction.
darryl
Darryl is offline   Reply With Quote
Old 02-01-2011, 04:48 PM   #310
StreetKa
Scooby Newbie
 
Member#: 272031
Join Date: Jan 2011
Chapter/Region: Tri-State
Vehicle:
2003 CL Type S
NBP

Default

Quote:
Originally Posted by Darryl
StreetKa
I would not be too interested in buying that car from what you say about it. I think you are rightfully hesitant: "mostly stock, rebuilt with Manely pistons". But that's just me.
As for the p0171, it's an odd one to track down. I had my front O2 sensor replaced and that didn't fix it. I cleaned the MAF and that didn't fix it. I checked for bad vacuum hoses, and found none. So I spent $50.00 and bought a cheap OBDII reader and just started clearing the code. Odd thing is the code would stay off for weeks then pop up again. I'd clear it, and wait for the next one to light off. Then it got to where I'd have to reset it like once a week. But now it's been six months since I've seen it. Go figure. It never did effect the drive-ability of the car; no change in startup, idling, power or fuel economy. Stranger than fiction.
darryl
Yeah but for the record car felt weak. If that doesnt do anything to performance then its something else that makes a car run weird. So u can run like that without worries if happen? Right ? Just get o2 wideband and control afr to be sure i think will be best way to have piece of mind. Thanks anyway im not gonna buy it. I'd rather save up and buy newer 06-07 wrx wagon stock.
StreetKa is offline   Reply With Quote
Old 02-01-2011, 07:12 PM   #311
Darryl
Scooby Specialist
 
Member#: 1626
Join Date: Jun 2000
Location: Cincinnati, Planet Mongo
Vehicle:
'02 RevLab 11.5:1
Platinum Silver

Default good call, StreetKa

Buy yourself some peace of mind (in a better Subie). Yes, no issues with my car because of that code. I always wanted to be sure I knew the CE light was not a (more) serious code. That's why I bought the reader. My old Bug-eye still runs like a young pup.
Good luck with whichever car you get.
darryl
Darryl is offline   Reply With Quote
Old 02-20-2011, 03:47 PM   #312
txl146
Scooby Guru
 
Member#: 32459
Join Date: Feb 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX VF34
Junior Tuned 301whp

Default

Quote:
Originally Posted by txl146 View Post
Here is what I did to remove P0171 code and pass state inspection.

1. MAF sensor cleaned
2. IACV completely disassembled then cleaned.
3. PCV replaced
4. TMIC and all hoses disassembled and checked for leak and condition.
5. Map pressure sensor removed and cleaned. Found out that one of the bolt came off loose!
6. Intake filter removed and put back (checked for proper seal).
7. Fuel filter and hoses replaced
8. O2 sensor ordered, but NOT replaced yet...

Car finally passed state inspection today....

P0171 is BACK again......

No drivability issue whatsoever and car feels powerful as before. No effect on fuel consumption or idling.
txl146 is offline   Reply With Quote
Old 02-20-2011, 05:43 PM   #313
Darryl
Scooby Specialist
 
Member#: 1626
Join Date: Jun 2000
Location: Cincinnati, Planet Mongo
Vehicle:
'02 RevLab 11.5:1
Platinum Silver

Default

hey txl146,
Mine drove the same ce light or no ce light; no dirvability issues at all. I still haven't seen it come back yet. No rhyme nor reason. It just comes and goes. I'd begun to accept that it must be the ECU mapping (which I believe it really is, but am not equipped to prove that).
darryl
Darryl is offline   Reply With Quote
Old 02-21-2011, 01:55 PM   #314
txl146
Scooby Guru
 
Member#: 32459
Join Date: Feb 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX VF34
Junior Tuned 301whp

Default

One other possibility I can think of is crossover pipe gaskets, but car is not making any high pitch noise or sound that will point to that area.

All other exhaust manifold gaskets have been replaced. Exhaust manifold bottom gaskets have been replaced twice last year.

Since idle is perfectly fine, I don't think there is any vacuum leak.
txl146 is offline   Reply With Quote
Old 02-21-2011, 02:12 PM   #315
JJsubie
Scooby Newbie
 
Member#: 263779
Join Date: Nov 2010
Location: Southern Cali
Vehicle:
02 wrx
mbp

Default

have you ever had your car tuned? sorry if im jumping in without reading too much before, but my experience is... I bought my car from someone who had it previously tuned. It turns out the tune was actually too lean around 2500 rpm so now that i have been tuned by my tuner everything is working great. The other thing that added to that was i had a short ram turbo inlet which has the maf sensor right next to the filter, i dont believe my car was previously tuned for it so that was a lot of excess air that the maf didnt know what to do with. sorry for the rant but i hope this helps
JJsubie is offline   Reply With Quote
Old 02-21-2011, 02:18 PM   #316
JJsubie
Scooby Newbie
 
Member#: 263779
Join Date: Nov 2010
Location: Southern Cali
Vehicle:
02 wrx
mbp

Default

i see that you have ordered the 02 sensor. i did that as well. if that doesn't get rid of it then i would still say it's the tune. It was inspection that got me too. Since the inspection place test is, "rev to 2500 and hold for at least 1 minute then let idle for 30 secs".. My check engine light came on during the test due to my tune. Once again, just informational, not sure if this is your scenario but i hope it helps
JJsubie is offline   Reply With Quote
Old 02-27-2011, 09:08 PM   #317
txl146
Scooby Guru
 
Member#: 32459
Join Date: Feb 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX VF34
Junior Tuned 301whp

Default

After a week, CEL is back again. First time I had CEL 3 months ago, I cleaned pressure sensor, which seems to have fixed it.

Got the CEL again last Sunday, so I deleted the CEL and cleaned MAF sensor. Today, I got the CEL again, so I re-tightened plugs and re-seated air intake. I really am running out of ideas as to what can possibly cause CEL as car idles perfectly find at 21 inHg at idle and drivability is just fine.
txl146 is offline   Reply With Quote
Old 02-28-2011, 12:39 AM   #318
GuamSTI
Scooby Newbie
 
Member#: 210071
Join Date: Apr 2009
Chapter/Region: International
Location: Guam
Vehicle:
04 STI
White

Default

Well just to add into this. When I had the CE code on my car it run very rich and gas consumption suffered. I have not had a code (knock on wood) since I replaced my turbo intlet hose.
GuamSTI is offline   Reply With Quote
Old 02-28-2011, 02:06 AM   #319
Big Joe
Scooby Newbie
 
Member#: 3722
Join Date: Jan 2001
Location: So. Cali.
Vehicle:
2002 WRX Wagon
Silver

Default

Suggest go back to post #1 in this thread and start checking off those possible fixes.

Also, to be absolutely sure this is not effecting your daily drive is by logging. Going lean during boost = .
Big Joe is offline   Reply With Quote
Old 03-04-2011, 09:27 PM   #320
xhengmanx
Scooby Newbie
 
Member#: 144425
Join Date: Mar 2007
Default

xhengmanx is offline   Reply With Quote
Old 03-11-2011, 10:33 AM   #321
dbomb25
Scooby Newbie
 
Member#: 273177
Join Date: Feb 2011
Location: Bozeman, MT
Vehicle:
2002 Impreza WRX
Black

Default

Maybe I can get some help here. I bought my car about a month ago and shortly after driving off the dealer lot this code pop'd up and has not gone away. I went through the steps in post and started to check for all of them. I even through a scan tool on my car to troubleshoot the code and have come down to what I think is one of two problems either fuel pressure or maf.

My symptoms are strange. The car runs great and accelerates fine except between 3k and 4.5k rpm. The dies in power by about half and then surges like its trying to accelerate but it just cant something is holding it back and then when it passes 4.5k rpm it boosts fine.

Mods that I know of is aps front mount and aps 65mm intake and aps dv and aftermarket turbo but dont know what kind yet. It is tuned when I bought the car. Any ideas would be great thanks.
dbomb25 is offline   Reply With Quote
Old 03-13-2011, 06:31 PM   #322
GuamSTI
Scooby Newbie
 
Member#: 210071
Join Date: Apr 2009
Chapter/Region: International
Location: Guam
Vehicle:
04 STI
White

Default

After not driving my car for 2 months it gave me this code again I am just tired of trying to fix it
GuamSTI is offline   Reply With Quote
Old 03-13-2011, 10:30 PM   #323
dbomb25
Scooby Newbie
 
Member#: 273177
Join Date: Feb 2011
Location: Bozeman, MT
Vehicle:
2002 Impreza WRX
Black

Default

I just wanted to write in that so far the car is running good. I had poor acceleration between 3-4k and crappy gas mileage. I replaced the maf today and was worlds better.
dbomb25 is offline   Reply With Quote
Old 03-14-2011, 12:33 PM   #324
jrussell88
Scooby Newbie
 
Member#: 260630
Join Date: Oct 2010
Location: coatesville, PA
Vehicle:
04 wrx 300hp

Default

great thread..it helped me out with my engine code
jrussell88 is offline   Reply With Quote
Old 03-17-2011, 08:10 PM   #325
txl146
Scooby Guru
 
Member#: 32459
Join Date: Feb 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX VF34
Junior Tuned 301whp

Default

Mine used to come up every 3-5 months, but now it comes on every 1-3 weeks.

I am also tired of trying to fix this problem. Think I tried pretty much everything you can think of.

Has anyone fixed this problem by replacing any of exhaust manifold gaskets?
txl146 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
Everything you ever wanted to know about anything ever made......ever Hester Prynne Off-Topic 12 11-05-2008 05:57 PM
OT Non-Gun Nuts: Everything you ever wanted to know but were afraid to ask (or try) Janq Off-Topic 47 12-29-2006 01:23 PM
Everything you ever wanted to know about exaust systems Back Road Runner Normally Aspirated Powertrain 9 10-24-2006 09:59 PM
('93-'01) Everything you ever wanted to know about Subarus... Porsche914boxer4 Impreza Forum 15 07-23-2001 09:17 PM
Everything you ever wanted to know about WRX exhauasts (old model) --> rao Normally Aspirated Powertrain 5 02-12-2001 08:56 PM


All times are GMT -4. The time now is 06:46 PM.


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.