Is my tranny on its way out ?
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Joined: Jul 2001
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From: Baton Rouge ,Louisiana ,USA
Is my tranny on its way out ?
For about the past week now , in the morning when my car has been sitting for awhile and has not been run when I put it in reverse and give it the gas it does not move like it should , the motor reves like it should and acts like it wants to back up but when I put my foot on the gas it just budges a little , I have to give it the gas a few times before it will back up without budging a little and hesitantly backing up . My Dad's old buick did this before he traded it in .My Uncle told him it was the tranny going out .Does it sound like my tranny is going out ?
See answer above.
Thaose guys kow their stuff.
JUST DO NOT CHANGE THE FLUID!!!
REPEATING
DO NOT CHANGE THE FLUID!!!!!
You'll definetly loose your tranny then.
I know it happened to me, twice.
In these trannys, changing fluid does NOT HELP AT ALL!!!!
Promise.
PS Resist Flooring it, too!
Thaose guys kow their stuff.
JUST DO NOT CHANGE THE FLUID!!!
REPEATING
DO NOT CHANGE THE FLUID!!!!!
You'll definetly loose your tranny then.
I know it happened to me, twice.
In these trannys, changing fluid does NOT HELP AT ALL!!!!
Promise.
PS Resist Flooring it, too!
It may not be on its way out.
I recommend changing the transmission filter/strainer it may be clogged and you are not getting enough pump pressure.
Change your fluid and adding TRANS-X (use recommended amount)
The mechanics at the state highway department have used TRANS-X and swear by it.
I have NEVER heard that changing your fluid shortens transmission life
. Why would it , you are removing contaminants.
I recommend changing the transmission filter/strainer it may be clogged and you are not getting enough pump pressure.
Change your fluid and adding TRANS-X (use recommended amount)
The mechanics at the state highway department have used TRANS-X and swear by it.
I have NEVER heard that changing your fluid shortens transmission life
. Why would it , you are removing contaminants. Ah Wise one,
SO I THOUGHT ALSO
BUT
What it also does is remove the few extra bits of the clutch particles that HELP keep tranny shifting/in gear/reduce slippage, etc.
I learned this the second time. First time, I thought, ya got to be kidding. Changed fluid, no difference. Wasted $30-ish.
Second time (I was loosing 3-4), I changed fluid (had stuff lying around), thought....added that tranny stuff. Felt real good on up shifts.
FELT LIKE I WON (cheap tranny fix/rebuild)
Then....I went and got another tranny because this one failed (in the Firebird).
Start planning on a rebuilt tranny soon.
700R4 are NOT like old 3-speeds.
They are different. And new style fluids make them operate better, too.
Chat with the folks on the tranny side, they'll tell ya. Start shopping for a quality rebuilder.
Just don't floor it alot. Especially in the cooler weather.
You are loosing clutch material/pressure due to worn surfaces.
A sign of that is what you are experiencing now. When I recently changed the fluid in my last tranny (the Firebird), I saw all these dark particles. I wondered what they were. I found out when I completely lost 3-4, had reverse, 1 & 2.
SO I THOUGHT ALSO
BUT
What it also does is remove the few extra bits of the clutch particles that HELP keep tranny shifting/in gear/reduce slippage, etc.
I learned this the second time. First time, I thought, ya got to be kidding. Changed fluid, no difference. Wasted $30-ish.
Second time (I was loosing 3-4), I changed fluid (had stuff lying around), thought....added that tranny stuff. Felt real good on up shifts.
FELT LIKE I WON (cheap tranny fix/rebuild)
Then....I went and got another tranny because this one failed (in the Firebird).
Start planning on a rebuilt tranny soon.
700R4 are NOT like old 3-speeds.
They are different. And new style fluids make them operate better, too.
Chat with the folks on the tranny side, they'll tell ya. Start shopping for a quality rebuilder.
Just don't floor it alot. Especially in the cooler weather.
You are loosing clutch material/pressure due to worn surfaces.
A sign of that is what you are experiencing now. When I recently changed the fluid in my last tranny (the Firebird), I saw all these dark particles. I wondered what they were. I found out when I completely lost 3-4, had reverse, 1 & 2.
On the other hand all the crap in the fluid, and any effects of overheating the fluid will make the existing fluid cause more trouble. If you're tranny is hosed, there isn't anything short of a rebuild thats going to be a permenent fix. If you do rebuild the tranny or replace it with a new one its advisable to follow recommended fluid change intervals.
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Thread Starter
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Joined: Jul 2001
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From: Baton Rouge ,Louisiana ,USA
Thanx Karl , and Thanx guys !
Yeah , looks like im ganna be taking it kinda easy for a little while and keeping my fingers crossed .I can afford the tranny re-build now , I just dont wanna spend my money on it ! How much is a good tranny rebuild anyway ? plus a shiftkit added to that ?
Yeah , looks like im ganna be taking it kinda easy for a little while and keeping my fingers crossed .I can afford the tranny re-build now , I just dont wanna spend my money on it ! How much is a good tranny rebuild anyway ? plus a shiftkit added to that ?
A tranny cooler will definately help before hand.
And The problems you are having now does not sound like the friction discs are the problem. If you were having problems in the upshifts I would say worn discs , but your problem is in reverse when the tranny is cold. That sounds like transmission pump problems. Cold fluid is harder to pump and you are not getting enough pressure.
Transmissions have two different pumps , one for the forward gears and a second for reverse. It sounds like the reverse pump may be getting weak or is not getting the proper amount of fluid to it . Thats why I made the previous post about changing the filter , so you could get more volume of oil to the pump.
It may work ,it may not . If if does you will save alot of money .
And The problems you are having now does not sound like the friction discs are the problem. If you were having problems in the upshifts I would say worn discs , but your problem is in reverse when the tranny is cold. That sounds like transmission pump problems. Cold fluid is harder to pump and you are not getting enough pressure.
Transmissions have two different pumps , one for the forward gears and a second for reverse. It sounds like the reverse pump may be getting weak or is not getting the proper amount of fluid to it . Thats why I made the previous post about changing the filter , so you could get more volume of oil to the pump.
It may work ,it may not . If if does you will save alot of money .
Supreme Member
Joined: Mar 2000
Posts: 13,414
Likes: 6
From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
You'll save more money on a rebuild if you drop the trans out yourself, and put it back in yourself... with that said, maybe you want to rebuild it (or a junkyard one) yourself! It doesn't look that bad... just a lot of stuff to keep track of. Looks like the only tools needed is a lo-reverse clutch spring compressor and some input seal protectors. Check out http://www.trannyman.com for the tools. I've got the GM service book, the ATSG trans manual, and the Haynes GM Transmission Overhaul book. One day I'll attempt it on a junkyard trans.
Thread Starter
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Joined: Jul 2001
Posts: 2,398
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From: Baton Rouge ,Louisiana ,USA
Originally posted by TomP
You'll save more money on a rebuild if you drop the trans out yourself, and put it back in yourself... with that said, maybe you want to rebuild it (or a junkyard one) yourself! It doesn't look that bad... just a lot of stuff to keep track of. Looks like the only tools needed is a lo-reverse clutch spring compressor and some input seal protectors. Check out http://www.trannyman.com for the tools. I've got the GM service book, the ATSG trans manual, and the Haynes GM Transmission Overhaul book. One day I'll attempt it on a junkyard trans.
You'll save more money on a rebuild if you drop the trans out yourself, and put it back in yourself... with that said, maybe you want to rebuild it (or a junkyard one) yourself! It doesn't look that bad... just a lot of stuff to keep track of. Looks like the only tools needed is a lo-reverse clutch spring compressor and some input seal protectors. Check out http://www.trannyman.com for the tools. I've got the GM service book, the ATSG trans manual, and the Haynes GM Transmission Overhaul book. One day I'll attempt it on a junkyard trans.
How much do you think I could get a used tranny for ? Thread Starter
Supreme Member
Joined: Jul 2001
Posts: 2,398
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From: Baton Rouge ,Louisiana ,USA
This maybe a stupid question , but can this re-build be done with the tranny out of the car ? ...I wanna find 700r4 at the boneyard and re-build , then when I finish it, install it .Thanx , Wayne
Thread Starter
Supreme Member
Joined: Jul 2001
Posts: 2,398
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From: Baton Rouge ,Louisiana ,USA
Where is there some good info on how to re-build a 700r4 tranny ? websites , books , anything ? Might as well start doing some research !
Still doing ok but wanna do my own re-build if I can ! ...Thanx guys , Wayne
Still doing ok but wanna do my own re-build if I can ! ...Thanx guys , Wayne Automatics are very difficult to rebuid , there is so much that can go wrong. I have been doing mechanic work for 14 years and I dont like to mess with them.
I just dont want to see you open up a can of worms and waste alot of time and money.
I would consider finding a manual tranny to put in the car .
They are simple to covert over and less trouble.
Just find a flywheel and hydraulic clutch system plus clutch , pressure plate and throw out bearing.
If you get a boneyard automatic chances are it wont last long where as a manual is alot more reliable.
Thats just my two cents worth.
I just dont want to see you open up a can of worms and waste alot of time and money.
I would consider finding a manual tranny to put in the car .
They are simple to covert over and less trouble.
Just find a flywheel and hydraulic clutch system plus clutch , pressure plate and throw out bearing.
If you get a boneyard automatic chances are it wont last long where as a manual is alot more reliable.
Thats just my two cents worth.
Thread Starter
Supreme Member
Joined: Jul 2001
Posts: 2,398
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From: Baton Rouge ,Louisiana ,USA
Originally posted by I Cant Drive 55
Automatics are very difficult to rebuid , there is so much that can go wrong. I have been doing mechanic work for 14 years and I dont like to mess with them.
I just dont want to see you open up a can of worms and waste alot of time and money.
I would consider finding a manual tranny to put in the car .
They are simple to covert over and less trouble.
Just find a flywheel and hydraulic clutch system plus clutch , pressure plate and throw out bearing.
If you get a boneyard automatic chances are it wont last long where as a manual is alot more reliable.
Thats just my two cents worth.
Automatics are very difficult to rebuid , there is so much that can go wrong. I have been doing mechanic work for 14 years and I dont like to mess with them.
I just dont want to see you open up a can of worms and waste alot of time and money.
I would consider finding a manual tranny to put in the car .
They are simple to covert over and less trouble.
Just find a flywheel and hydraulic clutch system plus clutch , pressure plate and throw out bearing.
If you get a boneyard automatic chances are it wont last long where as a manual is alot more reliable.
Thats just my two cents worth.
Wayne, on my Firebird, the guy removed & & repaired & reinstalled for $650.
It was painless.
This guy firmed it up, rebuilt it solid and correct. Shift Kit? I suppose.
It is NOT MY 1974 CORVETTE AUTOMATIC TRANNY
You don't want it to "chirp" all the time, that gets real boring & slippery roads are not friends!
It was painless.
This guy firmed it up, rebuilt it solid and correct. Shift Kit? I suppose.
It is NOT MY 1974 CORVETTE AUTOMATIC TRANNY
You don't want it to "chirp" all the time, that gets real boring & slippery roads are not friends!
Member
Joined: Jul 2001
Posts: 142
Likes: 0
From: Alberta, Canada
Car: 1986 Firebird
Engine: not stock 2.8
Transmission: T5
Changing the fluid won't do your tranny any harm. If anything, it should be regular maintainelce, every 2 years or so. I even like th change out the fluid in a standard onve every 2 years. You gotta think, it's oil like any other oil and will break down eventually. Broken down oil doesn't lubricate aswell. That's like saying never change your motor oil ever
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