The Subaru SVX World Network   SVX Network Forums
Live Chat!
SVX or Subaru Links
Old Lockers
Photo Post
How-To Documents
Message Archive
SVX Shop Search
IRC users:

Go Back   The Subaru SVX World Network > SVX Main Forums > Technical Q & A

Reply
 
Thread Tools Display Modes
  #1  
Old 03-16-2006, 07:26 AM
Antigenus's Avatar
Antigenus Antigenus is offline
Registered User
 
Join Date: Mar 2006
Location: Akron, Ohio
Posts: 97
Send a message via AIM to Antigenus
Transmission Tweak via Resistor on Battery??

I read somewhere, and have the instructions printed out around here somewhere, oh here we go I have the instruction and I will paste them.

"After listening to all the opinions about why they hold up so poorly, I came to the conclusion that the number one cause of premature failure in the SVX automatics was the slow shifting. During shifts, the bands and clutches inside the unit have to slip a certain amount when they engage the next gear. How much slippage occurs has a direct effect on the amount of heat produced as well as how much wear results from each shift.

Many owners have discovered a little trick to firm up the shifts by unplugging the resistor that moderates the line pressure. This resistor is located behind the battery and when unplugged, results in firmer shifts at virtually all speeds. Unfortunately, two side effects are too firm shifting at low speeds and hunting of gears on deceleration. "


Does this seem like a reasonable tweak to try? I have a brand new tranny that was replaced, not rebuilt and I want to savor the transmission as long as possible and get a little firmer shifting...could this work? Anyone do this before? Let me know what you think.
__________________
Matt - Akron, OH
And then what???
Reply With Quote
  #2  
Old 03-16-2006, 08:13 AM
Myetball's Avatar
Myetball Myetball is offline
Mr. Inappropriate
 
Join Date: May 2004
Location: San Antonio, TX
Posts: 330
Don't disconnect the resistor. What you want to do is install a shift kit from Smallcarperformance. BTW, the guy at smallcarperformance wrote the info you posted above but goes on to explain further HERE.
Reply With Quote
  #3  
Old 03-16-2006, 08:17 AM
Ricochet's Avatar
Ricochet Ricochet is offline
I brought some ham.
 
Join Date: Jul 2005
Location: Columbus OH
Posts: 1,868
Send a message via AIM to Ricochet Send a message via MSN to Ricochet Send a message via Yahoo to Ricochet
wtf is that? some hose and zip ties for 45 bucks???
__________________
Brian
Reply With Quote
  #4  
Old 03-16-2006, 08:36 AM
SVXRide's Avatar
SVXRide SVXRide is offline
Official AutoX Part Breaker
Subaru Gold Contributor
 
Join Date: Aug 2002
Location: Midlothian, VA 23112
Posts: 8,138
Registered SVX
Check with SVXFiles for a much less expensive "fix" for this...
-Bill
__________________
Retired NASA Rocket Scientist

Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023

Center Network Member #989

'92 Fully caged, 5 speed, waiting for its fully built EG33
'92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension
'92(?) Laguna, 6 spd and other stuff (still at OT's place)
My Locker
Reply With Quote
  #5  
Old 03-16-2006, 10:22 AM
Antigenus's Avatar
Antigenus Antigenus is offline
Registered User
 
Join Date: Mar 2006
Location: Akron, Ohio
Posts: 97
Send a message via AIM to Antigenus
...

Is this even necessary? I mean is this only applicable when you are encountering issues with your tranny? I'm not really into modding this if its not a complete positive effect to the operation of the SVX.
__________________
Matt - Akron, OH
And then what???
Reply With Quote
  #6  
Old 03-16-2006, 11:14 AM
Earthworm's Avatar
Earthworm Earthworm is offline
Meow!
 
Join Date: Mar 2002
Location: Winnipeg, Manitoba
Posts: 11,957
Send a message via ICQ to Earthworm Send a message via AIM to Earthworm Send a message via MSN to Earthworm Send a message via Yahoo to Earthworm Send a message via Skype™ to Earthworm
Don't unplug the resistor. This will generate an error code in your TCU. You will never know if there are multiple errors being reported unless you check the codes every time you get in the car.
Reply With Quote
  #7  
Old 03-16-2006, 02:38 PM
Myetball's Avatar
Myetball Myetball is offline
Mr. Inappropriate
 
Join Date: May 2004
Location: San Antonio, TX
Posts: 330
Quote:
Originally Posted by Antigenus
Is this even necessary? I mean is this only applicable when you are encountering issues with your tranny? I'm not really into modding this if its not a complete positive effect to the operation of the SVX.

Kinda confused as well, disconnecting the resistor is not completely positive. You get firmer shifts yes but all the time, even at low speed and the tranny will not downshift properly.

"Ricochet wtf is that? some hose and zip ties for 45 bucks???"

Now there's a well informed question.

Since the link I posted may have escaped some of you, here's some more info:

FAQ

What if my transmission seems to be working perfectly?
If your transmission seems to have no problems shifting or has been rebuilt recently, you may not notice much difference in normal driving. Even so, under brisk acceleration the Smallcar kit will firm up the shifts, helping your transmission last longer.

What if my transmission has problems?
If your automatic shifts sluggishly or has other problems, try unplugging the resistor behind the battery. If this seems to generally improve the operation, the Smallcar shift kit will help. If not, it's probably time for a rebuild or a Smallcar 5 speed.

How does it work?
The kit uses manifold pressure to sense engine load and switches the line pressure higher or lower as needed. For those who like to tinker, the switch point is adjustable.
Reply With Quote
  #8  
Old 03-16-2006, 03:22 PM
Antigenus's Avatar
Antigenus Antigenus is offline
Registered User
 
Join Date: Mar 2006
Location: Akron, Ohio
Posts: 97
Send a message via AIM to Antigenus
Thumbs up or down on this?
__________________
Matt - Akron, OH
And then what???
Reply With Quote
  #9  
Old 03-16-2006, 03:43 PM
AppStateSVX's Avatar
AppStateSVX AppStateSVX is offline
Mountaineer
 
Join Date: Mar 2004
Location: Boone, NC
Posts: 1,253
Send a message via AIM to AppStateSVX
do a search on this subject if you want a lot more info. There has been a LOT of talk about this, and some possible bad effects on the differential...
__________________
1992 Midnight Black LS-L - Sold 3/3/06

1991 Toyota MR2 - Sold 11/27/07

1992 BMW 325i
- Tokicko Suspension
Reply With Quote
  #10  
Old 03-16-2006, 04:29 PM
Antigenus's Avatar
Antigenus Antigenus is offline
Registered User
 
Join Date: Mar 2006
Location: Akron, Ohio
Posts: 97
Send a message via AIM to Antigenus
That was the answer I expected to hear from a politician haha just kidding
__________________
Matt - Akron, OH
And then what???
Reply With Quote
  #11  
Old 03-16-2006, 04:50 PM
AFBeefcake's Avatar
AFBeefcake AFBeefcake is offline
Subaru Swapper
 
Join Date: Aug 2002
Location: Griswold, CT
Posts: 1,779
Send a message via AIM to AFBeefcake
Quote:
Originally Posted by Ricochet
wtf is that? some hose and zip ties for 45 bucks???
and a vacuum switch. Which is what makes the whole kit work.

I've had the kit on my car since it was first released by smallcar. I like the kit. My shifts are much firmer and there is no hunting on down shifts.
__________________
2005 Legacy GT
2002 WRX VF22, Pinks, big TMIC and turbo back 128,*** miles
My WRX's Cardomain Page

Last edited by AFBeefcake; 03-16-2006 at 04:56 PM.
Reply With Quote
  #12  
Old 03-16-2006, 06:03 PM
oab_au oab_au is offline
Registered User
Subaru Gold Contributor
 
Join Date: Mar 2001
Location: Coffs Harb, Australia.
Posts: 5,032
Significant Technical Input Registered SVX
Quote:
Originally Posted by Antigenus
Thumbs up or down on this?
Thumbs up.

Harvey.
__________________
One Arm Bloke.
Tell it like it is!

95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels.
97 Liberty GX Auto sedan. 320,000Kls.
04 Liberty 30R Auto Premium. 92.000kls.
Reply With Quote
  #13  
Old 03-16-2006, 06:24 PM
Earthworm's Avatar
Earthworm Earthworm is offline
Meow!
 
Join Date: Mar 2002
Location: Winnipeg, Manitoba
Posts: 11,957
Send a message via ICQ to Earthworm Send a message via AIM to Earthworm Send a message via MSN to Earthworm Send a message via Yahoo to Earthworm Send a message via Skype™ to Earthworm
Quote:
Originally Posted by oab_au
Thumb up.

Harvey.
hehe...fixed
Reply With Quote
  #14  
Old 03-16-2006, 06:42 PM
oab_au oab_au is offline
Registered User
Subaru Gold Contributor
 
Join Date: Mar 2001
Location: Coffs Harb, Australia.
Posts: 5,032
Significant Technical Input Registered SVX
Quote:
Originally Posted by Earthworm
hehe...fixed
OK smart ass, I used the same thumb twice.

Harvey.
__________________
One Arm Bloke.
Tell it like it is!

95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels.
97 Liberty GX Auto sedan. 320,000Kls.
04 Liberty 30R Auto Premium. 92.000kls.
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 -6. The time now is 06:55 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
© 2001-2015 SVX World Network
(208)-906-1122