Welcome to the North American Subaru Impreza Owners Club Saturday August 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 > Service & Maintenance

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 07-30-2009, 01:36 AM   #1
robinbrd311
Scooby Newbie
 
Member#: 212207
Join Date: May 2009
Chapter/Region: NESIC
Location: Lexington
Vehicle:
2004 Impreza WRX
Java Black Pearl

Default Advice Needed for a recent problem with turbo

A few months ago I had to get my maf sensor retuned be cause there was a System Too Lean engine light and the car would knock around 4-6k rpm because the MAF sensor was not working correctly. The Dent Sports Garage in MA simply retuned the sensor and it worked properly up til now.

I drove my car to NY, a 3 hour drive, and it worked fine. On the way back I was accelerating quickly after a toll and the car lagged in each gear around the higher rpms. Every time after that when I had to accelerate to highway speed from a stop the same thing would happen but worse. When I got home the car was in the condition where if I started from first and floored it it would go to a bout 4 or 5k rpm then either stop there or knock and lag a lot and the engine light would flash until I shifted, and the same thing would happen in 2nd gear. (Didn't get to 3rd gear on my street)

I am guessing it is a problem with the MAF sensor again but before I go in and pay for them to work on it I was wondering if anyone knew anything about this.

2004 WRX, Cobb short ram intake, turbo XS front mount intercooler, one step colder spark plugs, tuned at dent sport 15psi boost
* Registered users of the site do not see these ads.
robinbrd311 is offline   Reply With Quote
Old 07-31-2009, 07:18 PM   #2
WcW
Scooby Newbie
 
Member#: 209963
Join Date: Apr 2009
Default

could be a vac. leak was the cause of the code and the leak has gotten worse. could be a thousand things..
WcW is offline   Reply With Quote
Old 07-31-2009, 07:50 PM   #3
UkNuck
Scooby Guru
 
Member#: 21808
Join Date: Jul 2002
Chapter/Region: E. Canada
Location: National Capital Region
Vehicle:
02 GroceryGettAr
Nonemore Black

Default

Quote:
Originally Posted by robinbrd311 View Post
I am guessing
exactly - pull the trouble code(s) and go from there
UkNuck is offline   Reply With Quote
Old 08-02-2009, 12:52 AM   #4
munkis
Scooby Guru
 
Member#: 1847
Join Date: Jul 2000
Chapter/Region: Tri-State
Location: brokenmotorsports.com
Vehicle:
Team Broken: V6 GF
rallyarmor.com

Default

yeah you probably hava big vacuum leak or a bad MAF, my guess would be around the turbo inlet area. Do you know what your fuel trims are at idle?
munkis 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
Advice Needed for a recent problem with turbo robinbrd311 Factory 2.0L Turbo Powertrain 2 07-30-2009 04:28 PM
Advice Needed for a recent problem with turbo robinbrd311 New England Impreza Club Forum -- NESIC 4 07-30-2009 12:38 PM
Advice Needed for a recent problem with turbo robinbrd311 Other Engine Management 1 07-30-2009 12:02 PM
Advice Needed for a recent problem with turbo robinbrd311 Factory 2.0L Turbo Powertrain 1 07-30-2009 04:32 AM
Recent problem with my rex. injustice Texas Impreza Club Forum -- TXIC 6 09-25-2007 07:48 PM


All times are GMT -4. The time now is 02:19 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.