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 11-25-2003, 03:13 PM
milesmc214's Avatar
milesmc214 milesmc214 is offline
Registered User
 
Join Date: Aug 2003
Location: Terre Haute, Indiana
Posts: 143
Send a message via AIM to milesmc214
Question TC problem?

Hello, I am getting ready to trade away my auto tranny thats has just been rebuilt, it now has about 5,000 on it or so. Since the weather has gotten colder, my TC seems like it dosent want to let go when the transmission is at a colder temp. When I come to a stop sign it shudders, almost like a 5 speed when you use the brake to stop the car, and then dont press the clutch in, thats what it feels like anyway. But the tranny wont do this if I give it about a 3 mins warmup before backing out. I want to make sure the trans is in a very good condition when I trade it.

I have an appoinment to have it inspected before, and after it is taken out. But it isnt until next week. Any Ideas?

Thanks
--Miles
__________________
http://www.force-fedmotorsports.com/svxsig3333.jpg
--Miles Chatterji
Reply With Quote
  #2  
Old 11-25-2003, 03:32 PM
Aredubjay's Avatar
Aredubjay Aredubjay is offline
Rat Fink Member ~:o)
 
Join Date: Feb 2001
Location: Owensboro, KY
Posts: 11,672
Send a message via ICQ to Aredubjay Send a message via AIM to Aredubjay Send a message via Yahoo to Aredubjay
Registered SVX
Re: TC problem?

Quote:
Originally posted by milesmc214
Hello, I am getting ready to trade away my auto tranny thats has just been rebuilt, it now has about 5,000 on it or so. Since the weather has gotten colder, my TC seems like it dosent want to let go when the transmission is at a colder temp. When I come to a stop sign it shudders, almost like a 5 speed when you use the brake to stop the car, and then dont press the clutch in, thats what it feels like anyway. But the tranny wont do this if I give it about a 3 mins warmup before backing out. I want to make sure the trans is in a very good condition when I trade it.

I have an appoinment to have it inspected before, and after it is taken out. But it isnt until next week. Any Ideas?

Thanks
--Miles
The TC doesn't go into lockup until the temp of the tranny fluid reaches 52 degrees F. In very cold temps, this could take a while.

Before I put my aux cooler in, I could almost set the clock by when lockup would occur. There was a certain point in the road (Just when I passed the Reed Post Office -- about 3 miles from my house) where I could "feel" TC Lockup. After I put the cooler in, and especially in very cold temps, I would be almost to work (a 40 mile drive) before lockup would occur. My guess is, that you're okay, although I'm vexed by the shudder.
__________________
Randy Johnson
3rd Registered Member 02-21-2001
First Member to Reach 10,000 Posts
First to arrive at the very first Reading Meet
Subaru Ambassador

1992 SVX PPG Pace Car Replica 110+k
1993 White Impreza L 240+K miles
2001 Legacy Outback Limited Sedan 250+K miles
2013 Deep Indigo Pearl Legacy 3.6R 49+K miles

"Reading is my favorite Holiday"
Mike Davis -- at Reading VI
Reply With Quote
  #3  
Old 11-25-2003, 03:55 PM
milesmc214's Avatar
milesmc214 milesmc214 is offline
Registered User
 
Join Date: Aug 2003
Location: Terre Haute, Indiana
Posts: 143
Send a message via AIM to milesmc214
I dont know where the shudder comes from either

I dont know where the shudder comes from either. The tranny shop drove it, and said that everything was fine, but they put in new fluid and lubricant just to be safe.

thanks for the info.
--Miles
__________________
http://www.force-fedmotorsports.com/svxsig3333.jpg
--Miles Chatterji
Reply With Quote
  #4  
Old 11-25-2003, 03:59 PM
Aredubjay's Avatar
Aredubjay Aredubjay is offline
Rat Fink Member ~:o)
 
Join Date: Feb 2001
Location: Owensboro, KY
Posts: 11,672
Send a message via ICQ to Aredubjay Send a message via AIM to Aredubjay Send a message via Yahoo to Aredubjay
Registered SVX
Re: I dont know where the shudder comes from either

Quote:
Originally posted by milesmc214
I dont know where the shudder comes from either. The tranny shop drove it, and said that everything was fine, but they put in new fluid and lubricant just to be safe.

thanks for the info.
--Miles

No problem. Glad to help. I know that a shudder, at low speeds, but under load, and on sharp left turns, under load, could be transfer clutch related. But, straightline stopping with a shudder . . . I dunno. Anyone? Could it be brakeband related?
__________________
Randy Johnson
3rd Registered Member 02-21-2001
First Member to Reach 10,000 Posts
First to arrive at the very first Reading Meet
Subaru Ambassador

1992 SVX PPG Pace Car Replica 110+k
1993 White Impreza L 240+K miles
2001 Legacy Outback Limited Sedan 250+K miles
2013 Deep Indigo Pearl Legacy 3.6R 49+K miles

"Reading is my favorite Holiday"
Mike Davis -- at Reading VI
Reply With Quote
  #5  
Old 11-25-2003, 04:23 PM
Mr. Pockets's Avatar
Mr. Pockets Mr. Pockets is offline
Moderator
 
Join Date: Apr 2001
Location: Champaign, IL
Posts: 6,916
Send a message via ICQ to Mr. Pockets
Registered SVX
You comapre this shudder to when you drive a manual and leave it in gear when you stop, but I wonder how accurate this analogy is. Are you seeing a drop in engine speed similar to the manual transmission situation you describe?
__________________


2005 RX-8 Grand Touring
2005 Outback
2002 Mercedes-Benz E320 wagon

END OF LINE
Reply With Quote
  #6  
Old 11-25-2003, 04:43 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
Yea as Randy says it has to get to 52F before it will lock the converter. May be the oil is so cold that it is causing the two harves of the converter to drag together because of the viscosity of the cold oil.

I other words I don't have a clue New one on me.

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
  #7  
Old 11-25-2003, 04:56 PM
milesmc214's Avatar
milesmc214 milesmc214 is offline
Registered User
 
Join Date: Aug 2003
Location: Terre Haute, Indiana
Posts: 143
Send a message via AIM to milesmc214
When this happens it is just like stopping normally except somtimes when the tranny is cold, it will shudder the analogy I used is the best way I could describe what it feels like, kind jerky, kinda makes the same noise as well, It even stalled once. It dos'nt do it very often since I give it a 3 min. warm up every morning.


--Miles
__________________
http://www.force-fedmotorsports.com/svxsig3333.jpg
--Miles Chatterji
Reply With Quote
  #8  
Old 11-27-2003, 09:08 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
Close...at 52°F it's not the TC locking, it's the tranny shifting into 4th gear. TC doesn't lock up until ~150°F.

Believe it or not but a bad coolant temp sensor can cause problems like this. When mine was bad I had troubles starting but more importantly when I shifted it would lurch and stall as if I dropped the clutch on a 5/6 speed.

This would occur for the first few minutes when starting on a cold engine (eg. overnight).
Reply With Quote
  #9  
Old 11-29-2003, 04:20 PM
milesmc214's Avatar
milesmc214 milesmc214 is offline
Registered User
 
Join Date: Aug 2003
Location: Terre Haute, Indiana
Posts: 143
Send a message via AIM to milesmc214
Thanks

Thanks, for the info i'll have it checked out this week sometime.
__________________
http://www.force-fedmotorsports.com/svxsig3333.jpg
--Miles Chatterji
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 03:47 PM.


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