Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

91 Legacy Automatic problem


  • Please log in to reply
9 replies to this topic

#1 bratman

bratman

    New User

  • Members
  • PipPip
  • 15 posts
  • Beaverton

Posted 20 March 2004 - 03:21 AM

Help! I purchased a 1991 Legacy 4WD sedan with an auto tranny last year to replace my Brat as a daily driver. The car was well maintained by the previous owner, and has driven fine until a few weeks ago.

I drove the car up a steep hill under somewhat hard acceleration. Everything was fine until I pulled off the freeway and stopped at the bottom of the exit ramp. When it was my turn to go, I pressed the accelerator, but it felt like the tranny hesitated a bit before fully engaging first gear. It's been doing this ever since, but ONLY when taking off in first gear, and ONLY after the engine has warmed up. The tranny takes about 5-10 seconds or so to engage when going from Park to Drive or Reverse as well (again, only when warm... It engages quickly when cold).

It feels as if the tranny is low on fluid, but I have checked the level, and it is fine. The fluid does not have a burnt smell, and there are no metal flakes in it either. The fluid was replaced about a year ago by the previous owner. The initial hesitation is the only problem the tranny has at this point... it drives just fine in all other gears, and has no problems up or downshifting.

After searching the web for others who have had this problem, I found a site which states the following:

"Automatic transmission: If the transmission is slow to engage after being parked, the torque converter is draining down and a new cooler line with a check valve must be installed. (1990-91)"

This sounds a lot like the problem I'm having. I'm wondering if anyone else has run into this problem... am I onto something with the cooler line and check valve, or am I barking up the wrong tree?

Thanks!

_________________
1982 Brat
1991 Legacy Sedan

#2 Steveman09

Steveman09

    Subaru Fanatic!

  • Members
  • 420 posts
  • Portland

Posted 20 March 2004 - 10:20 PM

my 3AT in my GL-10 was doing the exact same thing as you are describing, try this :


when it does this pull the shifter into 1st and see if the car goes.


Mine turned out that it was actually trying to start in 2nd instead of 1st.

I changed my governer and that fixed it.


Good luck!

#3 bratman

bratman

    New User

  • Members
  • PipPip
  • 15 posts
  • Beaverton

Posted 21 March 2004 - 12:15 AM

I thought about that, as I had a similar problem with an 88 Loyale auto. I did try manually putting it in first after the tranny warmed up, but it still did the same thing. :(

It also does the same little trick in reverse. I'm beginning to think it might be that check valve... sure feels like the torque converter is losing fluid or something like that. Now if I could only find more info about it before I spend $$$!

#4 Steveman09

Steveman09

    Subaru Fanatic!

  • Members
  • 420 posts
  • Portland

Posted 21 March 2004 - 01:20 AM

the older GL 3AT's also had a bullitin like this, its very hard to find in the case of the 3AT but since I work at a Subaru Dealership I had the resources :)

This is what I thought my problem was at first, but when I took the tranny pan off and saw the modified tube allready in place I knew it wasnt the case, in the end it turned out to be the governer for me.

There was a Orfice Tube in the valvebody on the 3AT's that was modified and fitted with a CHECK VALVE to also fix the draining of the T/C.

I'll check on monday at work and see if I can find anything for you.

#5 speakermakers

speakermakers

    New User

  • Members
  • PipPip
  • 11 posts
  • Incline village

Posted 03 September 2004 - 11:39 AM

My 99 legacy is doing the same thing. The only difference is that it dose not matter if the car is warm or cold. When I go to drive or reverse the engine just spins like the car is in neutral, then a couple of seconds later it grabs violently. The car has always done this for the last two years that I have owned it, and since the car shifts fine otherwise I stopped being concerned about it. Until last night! I drove the car about 3 blocks and the AT oil temp light started to flash on and off. I checked the fluid level but I could not get an accurate level because the fluid had large air bubbles in it that left no definite line on the dip stick. The oil did not look or smell burned. How can the trans over heat in 3 blocks? Unfortunately I have to drive this car to work, and if the trans goes up in smoke I will be selling this car for scrap!

#6 ststephen

ststephen

    USMB Regular

  • Members
  • PipPipPip
  • 31 posts
  • Colorado

Posted 05 September 2004 - 09:41 AM

For each 10 degrees (F) you lower your ATF temp, you about double the life of your tranny. I put auxil. tranny coolers on all my cars...$50 is sure cheap vs. a new tranny.

Just my recommendation....

#7 bg97leg

bg97leg

    New User

  • Members
  • PipPip
  • 11 posts
  • Phila.

Posted 05 September 2004 - 01:25 PM

You should open a new thread on this. Also, there are a few good Subie techs over on http://www.gartland.com/subaru/

Good luck.
Bill

My 99 legacy is doing the same thing. The only difference is that it dose not matter if the car is warm or cold. When I go to drive or reverse the engine just spins like the car is in neutral, then a couple of seconds later it grabs violently. The car has always done this for the last two years that I have owned it, and since the car shifts fine otherwise I stopped being concerned about it. Until last night! I drove the car about 3 blocks and the AT oil temp light started to flash on and off. I checked the fluid level but I could not get an accurate level because the fluid had large air bubbles in it that left no definite line on the dip stick. The oil did not look or smell burned. How can the trans over heat in 3 blocks? Unfortunately I have to drive this car to work, and if the trans goes up in smoke I will be selling this car for scrap!



#8 SevenSisters

SevenSisters

    Subaru Nut

  • Members
  • 512 posts
  • Cleve/Akron Ohio

Posted 05 September 2004 - 01:40 PM

Thanks for posting a resource I was unaware of.

#9 cookie

cookie

    Elite Master of the Subaru

  • Members
  • 3,058 posts
  • SFO

Posted 06 September 2004 - 11:16 AM

and pump are no longer as efficient, and wear on the bands requires more movement before they take up. I have driven cars like this for years before they actually failed. New fluid, filters, and the pickup tube extension are good but may not entirely fix it. Anything you do to a tired transmission to get a few more miles before you have to relace it is cheap with the price of trannies thee days.
I would keep my eye out for a good tranny to keep in the garage just in case.

#10 boilerman

boilerman

    New User

  • Members
  • PipPip
  • 10 posts
  • Auckland

Posted 12 September 2004 - 08:11 PM

Have you tried insalling a fuel filter in the return line from the trans oil cooler?

I had an Auto gearbox that would not engage third/fourth.removing the drain plug showed metal particals!!!
Installed a standard turbo fuel filter....Problem gone in two days!!..Have done 30,000km since...Try it a filter only costs $20..And Subaru autos usually do not have one fitted.

Help! I purchased a 1991 Legacy 4WD sedan with an auto tranny last year to replace my Brat as a daily driver. The car was well maintained by the previous owner, and has driven fine until a few weeks ago.

I drove the car up a steep hill under somewhat hard acceleration. Everything was fine until I pulled off the freeway and stopped at the bottom of the exit ramp. When it was my turn to go, I pressed the accelerator, but it felt like the tranny hesitated a bit before fully engaging first gear. It's been doing this ever since, but ONLY when taking off in first gear, and ONLY after the engine has warmed up. The tranny takes about 5-10 seconds or so to engage when going from Park to Drive or Reverse as well (again, only when warm... It engages quickly when cold).

It feels as if the tranny is low on fluid, but I have checked the level, and it is fine. The fluid does not have a burnt smell, and there are no metal flakes in it either. The fluid was replaced about a year ago by the previous owner. The initial hesitation is the only problem the tranny has at this point... it drives just fine in all other gears, and has no problems up or downshifting.

After searching the web for others who have had this problem, I found a site which states the following:

"Automatic transmission: If the transmission is slow to engage after being parked, the torque converter is draining down and a new cooler line with a check valve must be installed. (1990-91)"

This sounds a lot like the problem I'm having. I'm wondering if anyone else has run into this problem... am I onto something with the cooler line and check valve, or am I barking up the wrong tree?

Thanks!

_________________
1982 Brat
1991 Legacy Sedan






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users