Welcome to the North American Subaru Impreza Owners Club Thursday July 24, 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 08-20-2004, 07:25 PM   #1
Unabomber
Big Ron
Moderator
 
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
Vehicle:
on car parts so PM
me b4 j00 buy

Default fuel problem, is it the fuel pump or FPR?

I'm posting this for a buddy knee deep in fuel problem for an 02 WRX. His fuel pump will not shut off, it constantly runs. It's a Walbro unit. This is after removing the intake manifold, doing the coolant bypass mod, installing Hondata gaskets, and porting the TB. Prior to this, everything worked fine.

Right now we (I'm stuck at home doing the phone a friend thing) are clueless as to why the fuel pump won't shut off. Our guesses are the FPR or fuel pump. We are unsure if the fuel pump shuts off due to backpressure or an electrical signal. He is running a Link ECU. Anyone have any ideas I can call him with?
* Registered users of the site do not see these ads.
Unabomber is offline   Reply With Quote
Old 08-20-2004, 07:29 PM   #2
ImprezaRSfan!
Scooby Specialist
 
Member#: 13520
Join Date: Dec 2001
Chapter/Region: MAIC
Location: Springfield, VA
Vehicle:
99rs ej207 spec-c
its for sale

Default

it shuts off when u take the key off right?

mine runs constantly, but only when the key is left in the ON position
ImprezaRSfan! is offline   Reply With Quote
Old 08-20-2004, 07:33 PM   #3
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

...so it's just circulating back to the tank....and not leaking all over the place.....

Is the FPR vac line connected?
Uncle Scotty is offline   Reply With Quote
Old 08-20-2004, 07:57 PM   #4
Unabomber
Big Ron
Moderator
 
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
Vehicle:
on car parts so PM
me b4 j00 buy

Default

When you turn the car on, the fuel pump starts running. When you turn the car off, the fuel pump keeps running. If you disconnect the battery, it shuts off. When you reconnect the battery, it stays off until you turn the car on.....wash, rinse, repeat.

The vac line is connected and no leaks or gas smell.

Ideas?
Unabomber is offline   Reply With Quote
Old 08-20-2004, 11:01 PM   #5
zomba_830
Scooby Newbie
 
Member#: 55221
Join Date: Feb 2004
Location: Toronto
Vehicle:
2002 WRX silver

Default

Swap the fp relay for one from another circuit. Recheck. If no improvement, check power supply wire that feeds coil side of fp relay (it should only be hot when ignition is in the on and crank position. If still no improvement, checking of the fuel pump controller and ecu are the most logical next steps.

I'm making the assumption wiring at fp assembly has been checked and is ok.
zomba_830 is offline   Reply With Quote
Old 08-20-2004, 11:10 PM   #6
AZScoobie
Scooby Guru
 
Member#: 8785
Join Date: Jul 2001
Chapter/Region: SWIC
Vehicle:
02 c_turner@ix.
netcom.com

Default

Its likely that your friend pinched the TPS wires and or did not plug in the TPS connector fully.

C
AZScoobie is offline   Reply With Quote
Old 08-20-2004, 11:31 PM   #7
Unabomber
Big Ron
Moderator
 
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
Vehicle:
on car parts so PM
me b4 j00 buy

Default

Thanks for the advice! I don't know if it's fixed or not, but will relay this stuff to him when I go over there tomorrow a.m. We have to get it all bolted up so we can go to our Scooby Meet in the afternoon.
Unabomber is offline   Reply With Quote
Old 08-20-2004, 11:39 PM   #8
Homemade WRX
Scooby Guru
 
Member#: 33782
Join Date: Mar 2003
Chapter/Region: MAIC
Location: 3MI Racing LLC
Vehicle:
96 bastard child
search FIRST, then PM!!!

Default

I would check the FP relay first off...who is having the trouble ron? I'm free to help tomorrow after 5:00
Homemade WRX is offline   Reply With Quote
Old 08-20-2004, 11:41 PM   #9
bucklidl
Scooby Specialist
 
Member#: 36765
Join Date: May 2003
Chapter/Region: MWSOC
Location: Nebraska
Vehicle:
2007 WRX wagon
2008 FSXT WRB

Default

it's fixed and it was a really easy fix too
bucklidl is offline   Reply With Quote
Old 08-20-2004, 11:56 PM   #10
zomba_830
Scooby Newbie
 
Member#: 55221
Join Date: Feb 2004
Location: Toronto
Vehicle:
2002 WRX silver

Default

What was wrong???
zomba_830 is offline   Reply With Quote
Old 08-21-2004, 12:14 AM   #11
Unabomber
Big Ron
Moderator
 
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
Vehicle:
on car parts so PM
me b4 j00 buy

Default

Yeah, what was wrong buttshark?
Unabomber is offline   Reply With Quote
Old 10-30-2005, 12:09 PM   #12
mooserider
Scooby Newbie
 
Member#: 79655
Join Date: Jan 2005
Default

Just found this thread while searching for the same problem... I did figure it out a few minutes later. Was the ground wire that connects to the manifold above driver's side fuel rail. Had it off for clearance and didn't put it back. Whoops. Works fine now!
mooserider is offline   Reply With Quote
Old 02-24-2012, 04:42 PM   #13
HarleyAshby
Scooby Newbie
 
Member#: 310429
Join Date: Feb 2012
Default

i have a problem with an 03 and the idle being high. fuel isnt making it to the engine it seems but it stays on so some must be.
HarleyAshby 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
Fuel pump or FPR JRSTI Factory 2.5L Turbo Powertrain 5 01-21-2010 04:01 PM
Is this the fuel pump relay? swr999 Service & Maintenance 10 12-15-2009 04:17 PM
Is my fuel pump getting weak or is it the Turbo? ClayMac Factory 2.0L Turbo Powertrain 12 11-20-2008 03:59 PM
P1101, is it "manufacturer fuel air metering" or "Neutral Circuit Malfunction"?? AcquaCow Service & Maintenance 12 08-12-2008 10:01 AM
is it a bad clutch or engine problem? danger wagon Normally Aspirated Powertrain 6 12-02-2004 07:54 AM


All times are GMT -4. The time now is 12:38 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.