Welcome to the North American Subaru Impreza Owners Club Thursday October 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 > 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 06-28-2010, 02:11 PM   #1
sixthgearjunkie
Scooby Newbie
 
Member#: 219497
Join Date: Aug 2009
Location: HAmilton,VA
Vehicle:
1997 Impreza L
Black

Default Speed sensor short out

So it would seem that my speed sensor has shorted out and therefore is making my rev limiter kick in at 4.5k
this is a problem! now i have heard that the only way to get to my speed sensor is to go back and drop the engine and tranny again to get to it, and i don't have the tools or the money to be able to get that done. Is there any way I can disable the CEL for short periods of time. To be honest i don't really need the speedometer as I have the tach and only ever really use it. I want to either disable just that one particular CEL from coming on or the thing entirely and I only want to disable it sometimes, so not permanantly. Any speculations?
* Registered users of the site do not see these ads.
sixthgearjunkie is offline   Reply With Quote
Old 06-29-2010, 01:54 AM   #2
PhilSine
Scooby Specialist
 
Member#: 130489
Join Date: Oct 2006
Chapter/Region: MWSOC
Location: Superior, WI
Vehicle:
02 WRX Wagon (WRB)
98 OBS-T, 91 Legacy SS

Default

Assuming you have a manual transmission you do not have to drop the engine or tranny to get to the speed sensor. It is located on the passenger side of the tranny facing up about half way down the tranny.


Empty tranny...





With speed sensor inserted



Sorry for the crappy pics but the iPhone is only so good. Anyways...you get the idea of where it is located. You can't completely see the sensor from underneath but you can see the pigtail and follow it down. A crescent wrench will get it loose for you. You'll have to contort your hand a bit to screw it back in but its not too hard.

As far as I know, it cannot be bypassed since the ECU needs to see the pulse it creates in order to not be in safe mode.

Last edited by PhilSine; 06-29-2010 at 02:26 AM.
PhilSine is offline   Reply With Quote
Old 07-01-2010, 11:45 PM   #3
sixthgearjunkie
Scooby Newbie
 
Member#: 219497
Join Date: Aug 2009
Location: HAmilton,VA
Vehicle:
1997 Impreza L
Black

Default

I did find the sensor and your right it isn't hard to see at all, now i just need to locate a used one or something to suffice for the time being.
sixthgearjunkie is offline   Reply With Quote
Old 07-01-2010, 11:46 PM   #4
sixthgearjunkie
Scooby Newbie
 
Member#: 219497
Join Date: Aug 2009
Location: HAmilton,VA
Vehicle:
1997 Impreza L
Black

Default

By the way those pictures are extremely helpful to be honest. found the baby in a matter of seconds lol
sixthgearjunkie is offline   Reply With Quote
Old 07-12-2010, 07:45 PM   #5
Deus ex Machina
Scooby Newbie
 
Member#: 79815
Join Date: Jan 2005
Chapter/Region: MWSOC
Location: SE WI
Vehicle:
06 Mazda 6S

Default

Does anyone know the part number for that sensor? Or any place that I might be able to find it?

EDIT: Doing some more searching, it seems that the part number is 85082ae000.. can anyone confirm/deny?

Last edited by Deus ex Machina; 07-12-2010 at 08:00 PM.
Deus ex Machina is offline   Reply With Quote
Old 12-06-2010, 02:17 PM   #6
sith005
Scooby Newbie
 
Member#: 144629
Join Date: Mar 2007
Location: Silicon Valley
Vehicle:
2005 WRX Wagon
WR Blue Pearl

Default

Ditto on the pics, they are great! This is perfect, this just happened to me late last week. Thanks for the thread and the great pics/instructions!
sith005 is offline   Reply With Quote
Old 12-06-2010, 02:26 PM   #7
99imprezd
Scooby Specialist
 
Member#: 198964
Join Date: Jan 2009
Chapter/Region: Tri-State
Location: south NJ
Vehicle:
2004 WRX wgn, built!
WRB

Default

I swapped my trans on my '03 and the new speedo sensor was beat.. The only thing that happened was my speedo didnt work and had a CEL (P0502). I put the sensor from my old trans in and everything works fine now..
99imprezd is offline   Reply With Quote
Old 12-07-2010, 12:09 AM   #8
bangedlegacywagon97
Scooby Newbie
 
Member#: 215017
Join Date: Jun 2009
Chapter/Region: NWIC
Location: Redmond WA
Vehicle:
97OB 2004 civic
:-)

Default

Speed sensor does put the ECU in limp mode. $130 part
bangedlegacywagon97 is offline   Reply With Quote
Old 12-07-2010, 01:49 AM   #9
sith005
Scooby Newbie
 
Member#: 144629
Join Date: Mar 2007
Location: Silicon Valley
Vehicle:
2005 WRX Wagon
WR Blue Pearl

Default

Bummer, so turns out my sensor is fine, it's the sensor gear INSIDE the tranny that is worn down and needs to be replaced. Need to drop the tranny, open it up, swap it, and put back. Ugh...
sith005 is offline   Reply With Quote
Old 12-07-2010, 09:09 PM   #10
doobarugt
Scooby Newbie
 
Member#: 265207
Join Date: Nov 2010
Chapter/Region: MAIC
Location: York, PA
Vehicle:
05 Legacy GT
Silver

Default

So I drive an 05 Legacy GT and I replaced my terrible factory rear wheel bearings and now it rides like a dream, however, I'm having an issue with my speed sensor. When I did my bearings I also did brakes all around. Now I get an ABS light and the ER SS message. The ABS light is on at the start of driving but then goes off. When I pass around 49mph it comes on. Also, if I cruise at slower speed, the cruise will work but then feel a tiny brake check and I lose all functionality with my cruise. Any ideas? Also, I noticed I've lost power even with my accessport map. Is that the "limp" mode?

Last edited by doobarugt; 05-14-2011 at 09:59 AM.
doobarugt is offline   Reply With Quote
Old 12-08-2010, 05:31 AM   #11
Kevin Thomas
Street Racing Instructor
Moderator
 
Member#: 110
Join Date: Jul 1999
Location: 1997 OBS, 1996 SVX, 1988 RX
Vehicle:
1989 1989 XT6

Default

Quote:
Originally Posted by sixthgearjunkie View Post
So it would seem that my speed sensor has shorted out and therefore is making my rev limiter kick in at 4.5k
this is a problem! now i have heard that the only way to get to my speed sensor is to go back and drop the engine and tranny again to get to it, and i don't have the tools or the money to be able to get that done. Is there any way I can disable the CEL for short periods of time. To be honest i don't really need the speedometer as I have the tach and only ever really use it. I want to either disable just that one particular CEL from coming on or the thing entirely and I only want to disable it sometimes, so not permanantly. Any speculations?
I am having this same problem on my 1997 2.2ltr Outback Sport. Thanks for the pics above. I will be taking a look at it.

Post up any part numbers if you can guys! My problem actually came after having an Apexi SAFC NEO installed. Shop has since closed down and I suck fiddling with electrical stuff. So the car has been sitting. This is the only thing preventing me from taking it through motor vehicle. It's triggering the check engine light.
Kevin Thomas is offline   Reply With Quote
Old 01-22-2011, 12:53 PM   #12
treborcd
Scooby Newbie
 
Member#: 196519
Join Date: Dec 2008
Location: Atlanta
Vehicle:
05 WRX
black

Default

Quote:
Originally Posted by sith005 View Post
Bummer, so turns out my sensor is fine, it's the sensor gear INSIDE the tranny that is worn down and needs to be replaced. Need to drop the tranny, open it up, swap it, and put back. Ugh...
I'm having the same problem, speedometer doesn't work, sensor's fine, it's the small gear. Did you end up getting it fixed and is this a repair that only a Subaru dealership should look at? I know it'll be expensive but is it asking to get gouged by going to a dealership?

Also, does anyone know the part number for that small gear?
treborcd is offline   Reply With Quote
Old 04-04-2013, 02:05 AM   #13
Seanbreweraz
Scooby Newbie
 
Member#: 352329
Join Date: Apr 2013
Location: Phoenix
Vehicle:
1996 Impreza outback

Default Speedo tranny gear

I saw on a bother forum that you may be able to get to the gear from underneath behing the axel. The internal gear is shaved off and trying to find a way not the have to drop the transmission. Here is the post

http://www.ultimatesubaru.org/forum/...cement-in-car/

Also does any know a part number for the gear.
Seanbreweraz 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
Just bough Eclipse Navi and can't figure out how to install speed sensor JASWRX Car Audio, Video & Security 3 09-29-2010 03:24 PM
ABS light on, what sensors trigger it? wheel ABS sensor, speed sensor, what else? kirbykirb Legacy Forum 4 06-19-2010 10:37 PM
CEL figured out!! what is speed sensor? kick_boxur Pre-2002 Factory Turbo Powertrain 7 10-30-2008 12:04 PM
Anyone yank out the speed sensor? sidewayz Transmission (AT/MT) & Driveline 8 10-05-2001 06:53 PM
O2 sensor and speed sensor Seca2man New England Impreza Club Forum -- NESIC 3 04-06-2001 04:16 PM


All times are GMT -4. The time now is 05:32 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.