Transmissions and Drivetrain Need help with your trans? Problems with your axle?

700R4 gone bad?

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Old Jul 3, 2007 | 01:49 PM
  #1  
sikZ28's Avatar
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From: Duncan, Ok.
Car: 86 Trans Am
Engine: 305
Transmission: T5
700R4 gone bad?

hey guys, I need help on this one....

I have an 85 IROC that has a 700R4 in it.
When I go to put it in any gear, it dies on me.
If I rev the engine and put it in gear it will drive, but as soon as i let off the accelerator, it dies.

Any ideas???
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Old Jul 3, 2007 | 02:37 PM
  #2  
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From: Illinois
Car: 89 Firebird
Engine: 350 Ramjet
Transmission: 700R4
Axle/Gears: GM 9 bolt 3:27
Re: 700R4 gone bad?

Just a WAG, but is the TCC solenoid stuck engaged?
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Old Jul 3, 2007 | 04:02 PM
  #3  
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From: Duncan, Ok.
Car: 86 Trans Am
Engine: 305
Transmission: T5
Re: 700R4 gone bad?

that is probably it, I just don't know enough about trannys to really know.

how could I tell for sure before I go pulling the trans out?
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Old Jul 3, 2007 | 09:37 PM
  #4  
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From: Casselberry, FLA
Car: 88 V6 'bird/89TBI bird/85 T/A
Engine: 2.8/TBI/TPI
Transmission: V8 T-5/700R4 x2
Axle/Gears: 3.42 open/2.73 open/ 3.27 9 bolt
Re: 700R4 gone bad?

Pull out the wires that plug into the tranny. That should fix it if it's an electrical problem. Well, not fix it but let you know if there is an electrical problem and still allow you to drive the car. It will still drive around okay with no lockup as long as something internal didn't die inside the tranny.

Next, you'll have to pull the pan if unplugging it doesn't work. You will see the TCC solenoid up front near the pump. You may have to pull that out and clean it. Then put it back in and try again. You could just replace it with a new one...
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Old Jul 6, 2007 | 01:17 PM
  #5  
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From: Duncan, Ok.
Car: 86 Trans Am
Engine: 305
Transmission: T5
Re: 700R4 gone bad?

Originally Posted by KrisW
Pull out the wires that plug into the tranny. That should fix it if it's an electrical problem. Well, not fix it but let you know if there is an electrical problem and still allow you to drive the car. It will still drive around okay with no lockup as long as something internal didn't die inside the tranny.

Next, you'll have to pull the pan if unplugging it doesn't work. You will see the TCC solenoid up front near the pump. You may have to pull that out and clean it. Then put it back in and try again. You could just replace it with a new one...

SWEET!!!

those instructions are easy enough to follow that even a CAVEMAN could do it...

thanks KrisW!!!
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Old Jul 6, 2007 | 03:02 PM
  #6  
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From: Casselberry, FLA
Car: 88 V6 'bird/89TBI bird/85 T/A
Engine: 2.8/TBI/TPI
Transmission: V8 T-5/700R4 x2
Axle/Gears: 3.42 open/2.73 open/ 3.27 9 bolt
Re: 700R4 gone bad?

You're not done...

You also have to post what the results were so that everyone can benefit from your headaches!

That's the whole purpose of this place!!!
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Old Jul 6, 2007 | 03:52 PM
  #7  
sikZ28's Avatar
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From: Duncan, Ok.
Car: 86 Trans Am
Engine: 305
Transmission: T5
Re: 700R4 gone bad?

Originally Posted by KrisW
You're not done...

You also have to post what the results were so that everyone can benefit from your headaches!

That's the whole purpose of this place!!!


I was planning on it, I just have to wait until next week to post.

BTW, thanks!!
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Old Jul 19, 2007 | 05:48 PM
  #8  
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From: Duncan, Ok.
Car: 86 Trans Am
Engine: 305
Transmission: T5
Re: 700R4 gone bad?

Sorry I haven't gotten back...a hot a$$ project came in at work (over time pay...yay )

I did manage to unplug the connector on the transmission and it still acts like the torque converter is engaged.

next step is to pull the pan off and look at the solenoid and see if it is stuck.

I will get to this as soon as I get a breather from this project.

Thanks....
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Old Oct 27, 2007 | 02:20 PM
  #9  
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From: Duncan, Ok.
Car: 86 Trans Am
Engine: 305
Transmission: T5
Re: 700R4 gone bad?

Sorry to bring an older thread back to life, but i finally got my IROC home. I pulled the pan and this is what i found...

700R4 gone bad?-trans1.jpg

700R4 gone bad?-trans2.jpg

So, what do you guys think?
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Old Oct 27, 2007 | 02:38 PM
  #10  
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From: New Berlin, WI
Car: 92 Trans Am
Engine: 383 Stealth Ram
Transmission: 4L60
Axle/Gears: 3.42/10 bolt
Re: 700R4 gone bad?

Some metal shavings are normal. Any clue how long since someone had done a trans fluid change??
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Old Oct 27, 2007 | 02:46 PM
  #11  
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From: Duncan, Ok.
Car: 86 Trans Am
Engine: 305
Transmission: T5
Re: 700R4 gone bad?

nope, no telling. I bought it from a bud last year and there isn't no telling when the last time was.

So you think that looks normal? I have no clue about how the pan or fluid should look like.

I noticed there wasn't any chunks or large pieces off in it, you think I need to look at the solenoid and do a new filter and fluid?
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Old Oct 27, 2007 | 02:48 PM
  #12  
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Car: 88 Trans Am GTA
Engine: 383 Lingenfelter/AFR 670 hp
Transmission: 700r4 3500 stall
Axle/Gears: 3.90 9 inch
Re: 700R4 gone bad?

pretty common lookin for a torque convertor failure. may have some planetary's taking a crap too
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Old Oct 27, 2007 | 02:51 PM
  #13  
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From: Duncan, Ok.
Car: 86 Trans Am
Engine: 305
Transmission: T5
Re: 700R4 gone bad?

think I should rebuild or get a new one?
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Old Oct 27, 2007 | 08:33 PM
  #14  
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From: Casselberry, FLA
Car: 88 V6 'bird/89TBI bird/85 T/A
Engine: 2.8/TBI/TPI
Transmission: V8 T-5/700R4 x2
Axle/Gears: 3.42 open/2.73 open/ 3.27 9 bolt
Re: 700R4 gone bad?

I would pull out the TCC solenoid and replace that. Fill with fluid and then run it.

Let us know after that...
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Old Oct 27, 2007 | 08:42 PM
  #15  
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From: Duncan, Ok.
Car: 86 Trans Am
Engine: 305
Transmission: T5
Re: 700R4 gone bad?

Originally Posted by KrisW
I would pull out the TCC solenoid and replace that. Fill with fluid and then run it.

Let us know after that...
ok will do tomorrow

*EDIT*
Can't get the TCC solenoid untill Tuesday, so it will have to wait untill that evening when I get home from work.

Last edited by sikZ28; Oct 29, 2007 at 07:33 AM.
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Old Nov 4, 2007 | 05:56 PM
  #16  
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From: Duncan, Ok.
Car: 86 Trans Am
Engine: 305
Transmission: T5
Re: 700R4 gone bad?

ok, finally got some time to puy in new solenoid and filter and it still tries to diewhen I put it in gear.

Time for a new tranny?
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Old Nov 4, 2007 | 06:57 PM
  #17  
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From: Casselberry, FLA
Car: 88 V6 'bird/89TBI bird/85 T/A
Engine: 2.8/TBI/TPI
Transmission: V8 T-5/700R4 x2
Axle/Gears: 3.42 open/2.73 open/ 3.27 9 bolt
Re: 700R4 gone bad?

Most likely just the torque converter has failed. The clutch inside is locked all the time.

At this point, it is time to evaluate your transmission as well. If you are high mileage and worried then now is the time to change it.

I seem to have much more time than money, so I would just pull the tranny, change the torque converter, and then put it back in.
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Old Nov 5, 2007 | 06:19 PM
  #18  
sikZ28's Avatar
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From: Duncan, Ok.
Car: 86 Trans Am
Engine: 305
Transmission: T5
Re: 700R4 gone bad?

Originally Posted by KrisW
Most likely just the torque converter has failed. The clutch inside is locked all the time.

At this point, it is time to evaluate your transmission as well. If you are high mileage and worried then now is the time to change it.

I seem to have much more time than money, so I would just pull the tranny, change the torque converter, and then put it back in.
Lol, I don't have much of either time or money, so unfortunately I don't know what my next step will be.

1. Replace the torque converter and hope thats it.
2. replace or rebuild tranny as soon as overtime at work is back in the
budget @ work
3. replace the tired 305 with something bigger same time as the tranny
repair/rebuild.
4. sell the 3rd gen and get a 4th gen. (would be easy to do if the 3rd gens
weren't so bad a$$ looking.

decisons...decisions...

probably replace the torque converter and go from there.

I can't even believe I actually thought about selling my IROC, everytime I sell one of my Camaros, I end up regretting it.

thanks for the help so far KrisW
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