My 1990 700R4 is leaking fluid on the right side. It is leaking from the black plastic (?) tube containing a cable going to
the carb. It leaks between the tube and the metal transmission housing. Looks like only one bolt is holding it on. I have not
tried to remove the bolt or black tube containing the cable. It looks like there is no gasket between the seating surfaces.
I am assuming there is an "O" ring on the tube as it enters the transmission housing. Can I make this a diy repair?
Any help and guidance is appreciated.
Skinnedknuckles
Gilbert, AZ.
the carb. It leaks between the tube and the metal transmission housing. Looks like only one bolt is holding it on. I have not
tried to remove the bolt or black tube containing the cable. It looks like there is no gasket between the seating surfaces.
I am assuming there is an "O" ring on the tube as it enters the transmission housing. Can I make this a diy repair?
Any help and guidance is appreciated.
Skinnedknuckles
Gilbert, AZ.
Drew
Supreme Member
close
May 4, 2026
- Join DateJul 1999
- LocationSalina, KS
- Posts:20,310
- iTrader Positive Feedback100
- iTrader Feedback Score(58)
- Likes:250
- Liked:1,067 Times in 758 Posts
You're on the right track. There's supposed to be an o-ring.
Thanks Drew. Maybe someon can tell what the "black plastic tube" is called so I can get the proper O-ring from the parts store. I assume the cable is attached to something inside the tranny and will have to be unhooked to install the new
O-ring. Hopeing one of you guys can tell me how and if this is something I can do.
Unfortunately I know less about auto trannys than I do about women.
O-ring. Hopeing one of you guys can tell me how and if this is something I can do.
Unfortunately I know less about auto trannys than I do about women.
Drew
Supreme Member
close
May 4, 2026
- Join DateJul 1999
- LocationSalina, KS
- Posts:20,310
- iTrader Positive Feedback100
- iTrader Feedback Score(58)
- Likes:250
- Liked:1,067 Times in 758 Posts
It'd be the TV cable. I'll try to post a pic in a few minutes. Gotta dig one out of the pile.
Drew
Supreme Member
close
May 4, 2026
- Join DateJul 1999
- LocationSalina, KS
- Posts:20,310
- iTrader Positive Feedback100
- iTrader Feedback Score(58)
- Likes:250
- Liked:1,067 Times in 758 Posts
Ok, now I get to contradict myself... Could have sworn it was an O-ring, but the one I have handy uses a flanged rubber seal. Could be that earlier cars have an O-ring, or that I just remembered wrong. Anyway, here are the pics...
This seal has obviously seen some hard times. Think it came off the 91 Firebird.
Originally, I think it probably looked like this...
http://www.rockauto.com/en/moreinfo.php?pk=64807
That's an ATP SO37 listed as a "Detent Cable Seal" for $1.32.
This seal has obviously seen some hard times. Think it came off the 91 Firebird.
Originally, I think it probably looked like this...
http://www.rockauto.com/en/moreinfo.php?pk=64807
That's an ATP SO37 listed as a "Detent Cable Seal" for $1.32.
Moderator
What Drew said. That seal is referred to as a 'hat' style seal. While there it would be worth replacing the dipstick tube seal.
IIRC, the older 700R4's did use an o-ring.
RBob.
IIRC, the older 700R4's did use an o-ring.
RBob.
Thanks for the pics Drew. You were right. A hat box seal or O-ring. Either one should not be hard to find at the parts store.
RBob, .... guess we'll see if it's an O-ring or hat box style when I pull it apart. It's a 1990 700R4.
The TV cable has to be attached to something in the tranny. Do you think the end can be accessed with the pan removed and unhooked so the cable can be pulled out of the tranny housing? Seems like the only way to replace a hat box or
O-ring seal.
Unless, the TV cable can be unhooked at the carb and seal/O-ring can be slid down the cable and stretched over the
end of the "black tube" with the cable still attached inside the tranny. ???? Thoughts on any of that?
RBob, .... guess we'll see if it's an O-ring or hat box style when I pull it apart. It's a 1990 700R4.
The TV cable has to be attached to something in the tranny. Do you think the end can be accessed with the pan removed and unhooked so the cable can be pulled out of the tranny housing? Seems like the only way to replace a hat box or
O-ring seal.
Unless, the TV cable can be unhooked at the carb and seal/O-ring can be slid down the cable and stretched over the
end of the "black tube" with the cable still attached inside the tranny. ???? Thoughts on any of that?
Drew
Supreme Member
close
May 4, 2026
- Join DateJul 1999
- LocationSalina, KS
- Posts:20,310
- iTrader Positive Feedback100
- iTrader Feedback Score(58)
- Likes:250
- Liked:1,067 Times in 758 Posts
Just remove the bolt where the cable goes into the trans, then pull it out and you'll see a wire hook thru the end of the cable. Slide the hook to either the left or right, and it'll unhook. Then you can just slip the seal off, slide the new one on, and reassemble.
It wouldn't hurt to disconnect the TV cable at the throttlebody end, and reset it when you're done.
It wouldn't hurt to disconnect the TV cable at the throttlebody end, and reset it when you're done.
Great. Thanks Drew. $1.32 for the part at Rock Auto and my labor is free. Good news about the wire hook at the
end of the cable.
Raining here today so will get on this project if dry tomorrow. Working outside.
Again, thanks for all the input from you and RBob.
Jerry (Skinnedknuckles) Gilbert, AZ.
end of the cable.
Raining here today so will get on this project if dry tomorrow. Working outside.
Again, thanks for all the input from you and RBob.
Jerry (Skinnedknuckles) Gilbert, AZ.
TylerSteez
Supreme Member
close
May 4, 2026
- Join DateMay 2013
- LocationCT
- Posts:1,494
- iTrader Positive Feedback100
- iTrader Feedback Score(3)
- Car86 Trans Am WS6
- Engine383 stroker
- Transmission700r4
- Axle/Gears9 Bolt Torsen 3.70
- Likes:108
- Liked:99 Times in 72 Posts
It makes it a little bit easier to unbolt the cross member and pivot the engine and transmission down for better access. just dont crush your distributor cap against the firewall when you do it.
Youll be bending your wrists and arms in very odd ways in order to get the hook in the transmission back on the cable in the tv cable's housing. I usually hook it on and have a friend pull on the cable on the intake side in order to keep the hook attached to the cable when I go to put it back in the trans.
Youll be bending your wrists and arms in very odd ways in order to get the hook in the transmission back on the cable in the tv cable's housing. I usually hook it on and have a friend pull on the cable on the intake side in order to keep the hook attached to the cable when I go to put it back in the trans.
Good tips Tyler........ I need all the guidance I can get. I sure appreciate the advice.
Skinnedknuckles...
Skinnedknuckles...