Search



Go Back   Third Generation F-Body Message Boards > Tech Boards > Transmissions and Drivetrain
Register Forgot Password?

Transmissions and Drivetrain Need help with your trans? Problems with your axle?
Sponsored by Hughes Performance
Click Here

Welcome to ThirdGen.org!
Welcome to ThirdGen.org.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!


Reply
 
Thread Tools Search this Thread
Old 08-06-2004, 06:12 PM   #1
Junior Member
 
Join Date: Jul 2004
Location: Houston, TX
Posts: 5
Car: 1992 Camaro RS
Engine: 3.1L V6
Transmission: 700R4

Classifieds Rating: (0)
No Second Gear - 700R4

Ok, I've been having an issue for the last week. I have a 700R4 auto and it shifts fine in any gear other than 2nd. If I drive with overdrive enabled the revs climb in first well past the regular shift point and then the revs fall to where third gear should be. It doesnt slip, but completely skips 2nd. If I manually step through the gears, 1st and drive are fine but in 2nd it just races, like the transmission is in neutral. So, basically no second gear. No slippage in other gears through. I pulled the pan and found a small screw that had been caught by the pan debris magnet, but other than that the fluid looked great.

Could this be a valve body or control problem? Or a broken band? I'm hoping it's some sort of control issue and not something where it needs to be torn into.
slinkt is offline vBGarage Page   Reply With Quote
Old 08-07-2004, 01:40 AM   #2
Supreme Member
 
Join Date: Mar 2000
Location: Central NJ, USA
Posts: 13,405
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4

Classifieds Rating: (0)

Sounds like the 2-4 band took a crap. You might just be lucky, and it's just that the servo's apply pin doesn't engage the band completely- but that's a wild chance.

Note that when you row your own (shift manually), when the stick's in 1st or 2nd gear position, the line pressure (internal trans fluid pressure) is almost DOUBLE the normal presure. So that might "mask" a problem. For instance, my trans will slip in 2nd (under light throttle) and 4th (medium throttle upshift) But if I row my own, the trans hits 2nd - and most importantly, it stays in 2nd and doesn't slip out.
__________________
-Tom P (Hot rodded 1986 Firebird 2.8l)
TomP is offline vBGarage Page   Reply With Quote
Old 08-22-2004, 10:24 AM   #3
Member
 
Join Date: Aug 2004
Location: new york city
Posts: 156

Classifieds Rating: (0)
without 2nd gear you have the possibility of overspeeding the engine on a kickdown.for example if the road speed and throttle position call for a 4/2 or a 3/2 kickdown the valve body will exhaust the 3/4 clutch pack and back pressure on the servo allowing it to re apply.with a non functioning band the transmission will go back to first gear.this can cause engine overspeeding and result in engine damage.
__________________
www.ckperformance.com christoforos kokkonis,general motors transmission specialist.we design and manufature street,strip and racing automatics ,convertors,transbrakes,billet drums and shafts ,planetary gears and valve body recalibration kits
chris718 is offline vBGarage Page   Reply With Quote
Old 08-22-2004, 10:24 AM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > Transmissions and Drivetrain

Tags
2nd, 700r4, apply, drive, fine, firebird, fourth, gear, pin, servo, skips, slip, slips, trans, transmission
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 04:28 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.

Emails & Contact Details