Welcome to the North American Subaru Impreza Owners Club Wednesday December 2, 2020
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo)

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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 10-07-2014, 04:34 PM   #1
andysrt
Scooby Newbie
 
Member#: 306130
Join Date: Jan 2012
Location: burbs of chitown
Vehicle:
06 foz xt

Default AVCS questions and missfires

Is there supposed to be a difference in degrees between left and right on start up? At idle avcs in left reads 22 to 25 degrees and avcs in right reads 7 degrees. My car idles rough on start up and throws missfire codes on all 4 cylinders along with PFFE . No issue's otherwise. The car is definitely not missfiring all the time. I did change from a dual mass flywheel to a singlemass stock flywheel. that was close to 30k miles ago and the codes didn't start until a few weeks ago. Any ideas? Its a 06 forester xt by the way.

Sent from my LG-LS995 using NASIOC mobile app
* Registered users of the site do not see these ads.
andysrt is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 10-07-2014, 04:45 PM   #2
Badler
Scooby Guru
 
Member#: 133597
Join Date: Nov 2006
Chapter/Region: SCIC
Location: Orange
Default

Timing belt probably jumped a tooth or two.
Badler is offline   Reply With Quote
Old 10-08-2014, 10:36 AM   #3
elandman
Scooby Newbie
 
Member#: 346897
Join Date: Feb 2013
Vehicle:
2006 Foz XT
Black

Default

AVCS should match at all times within a degree or two
elandman is offline   Reply With Quote
Old 10-08-2014, 12:17 PM   #4
andysrt
Scooby Newbie
 
Member#: 306130
Join Date: Jan 2012
Location: burbs of chitown
Vehicle:
06 foz xt

Default

I'm going to do a log tonight on the way home from work. Any specific thing i should log other than avcs left and right and the ocv.

Thanks

Sent from my LG-LS995 using NASIOC mobile app
andysrt is offline   Reply With Quote
Old 10-08-2014, 07:10 PM   #5
andysrt
Scooby Newbie
 
Member#: 306130
Join Date: Jan 2012
Location: burbs of chitown
Vehicle:
06 foz xt

Default

Ok i data logged on the way home one side stayed between 23-25 the other was between 7 and 9 no matter how much throttle was applied. Whats the next step or how do i check the avcs and ocv?

Sent from my LG-LS995 using NASIOC mobile app
andysrt is offline   Reply With Quote
Old 09-06-2020, 11:42 PM   #6
iRishman514
Scooby Newbie
 
Member#: 378501
Join Date: Jan 2014
Chapter/Region: E. Canada
Location: Montreal, Canada
Vehicle:
2011 STI Hatch
Plasma Blue Pearl

Default

Quote:
Originally Posted by andysrt View Post
Ok i data logged on the way home one side stayed between 23-25 the other was between 7 and 9 no matter how much throttle was applied. Whats the next step or how do i check the avcs and ocv?

Sent from my LG-LS995 using NASIOC mobile app


Bump this. I have the same issue. Anyone know?
iRishman514 is offline   Reply With Quote
Old 09-11-2020, 12:55 PM   #7
subaru_gc8
Scooby Specialist
 
Member#: 29292
Join Date: Nov 2002
Chapter/Region: SCIC
Location: Orange County CA
Vehicle:
2004 WRX wagon
silver

Default

Quote:
Originally Posted by andysrt View Post
Ok i data logged on the way home one side stayed between 23-25 the other was between 7 and 9 no matter how much throttle was applied. Whats the next step or how do i check the avcs and ocv?

Sent from my LG-LS995 using NASIOC mobile app
I had that problem with my jdm ecu, we changed the pulleys and it still persisted, come to find out it was the ecu that had the problem.. I would suggest if you can get another ecu first as it is alot easier to change than the pulley
subaru_gc8 is offline   Reply With Quote
Old 09-13-2020, 12:21 AM   #8
iRishman514
Scooby Newbie
 
Member#: 378501
Join Date: Jan 2014
Chapter/Region: E. Canada
Location: Montreal, Canada
Vehicle:
2011 STI Hatch
Plasma Blue Pearl

Default

Quote:
Originally Posted by subaru_gc8 View Post
I had that problem with my jdm ecu, we changed the pulleys and it still persisted, come to find out it was the ecu that had the problem.. I would suggest if you can get another ecu first as it is alot easier to change than the pulley


Thanks for the help. The ecu swap on my car is quite challenging with it needing to flash for the immobilizer.

Today I re-timed the car, tapped the AVCS gears with a rubber mallet, did an oil and filter change with disconnecting the battery.

Didnít really notice any slipped timing belt, though the drivers Intake cam may have been off by one tooth.

Drove the car for about 5 min and voila, AVCS on both sides went down to zero at idle and increased with the throttle.
iRishman514 is offline   Reply With Quote
Old 09-13-2020, 02:21 AM   #9
subaru_gc8
Scooby Specialist
 
Member#: 29292
Join Date: Nov 2002
Chapter/Region: SCIC
Location: Orange County CA
Vehicle:
2004 WRX wagon
silver

Default

Quote:
Originally Posted by iRishman514 View Post
Thanks for the help. The ecu swap on my car is quite challenging with it needing to flash for the immobilizer.

Today I re-timed the car, tapped the AVCS gears with a rubber mallet, did an oil and filter change with disconnecting the battery.

Didn***8217;t really notice any slipped timing belt, though the drivers Intake cam may have been off by one tooth.

Drove the car for about 5 min and voila, AVCS on both sides went down to zero at idle and increased with the throttle.
nice glad you got it fixed, but I would change which ever one is sticking
subaru_gc8 is offline   Reply With Quote
Old 09-13-2020, 02:16 PM   #10
iRishman514
Scooby Newbie
 
Member#: 378501
Join Date: Jan 2014
Chapter/Region: E. Canada
Location: Montreal, Canada
Vehicle:
2011 STI Hatch
Plasma Blue Pearl

Default

Quote:
Originally Posted by subaru_gc8 View Post
nice glad you got it fixed, but I would change which ever one is sticking


They both were stuck.
iRishman514 is offline   Reply With Quote
Old 09-13-2020, 05:48 PM   #11
subaru_gc8
Scooby Specialist
 
Member#: 29292
Join Date: Nov 2002
Chapter/Region: SCIC
Location: Orange County CA
Vehicle:
2004 WRX wagon
silver

Default

Quote:
Originally Posted by iRishman514 View Post
They both were stuck.
so one was stuck on high and one on low?
subaru_gc8 is offline   Reply With Quote
Old 09-14-2020, 02:10 AM   #12
iRishman514
Scooby Newbie
 
Member#: 378501
Join Date: Jan 2014
Chapter/Region: E. Canada
Location: Montreal, Canada
Vehicle:
2011 STI Hatch
Plasma Blue Pearl

Default

Quote:
Originally Posted by subaru_gc8 View Post
so one was stuck on high and one on low?


Correct. Passenger stuck on 6ish and driver stuck on 25ish
iRishman514 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 05:46 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2020 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.