4L60E Transmission Issues - CamaroZ28.Com Message Board

Go Back   CamaroZ28.Com Message Board > 1967-2002 Powertrain Discussion > LS1 Based Engine Tech

Reply Post New Thread
 
LinkBack Thread Tools Search this Thread
Old 03-05-2013, 03:46 PM   #1
Registered User
 
Z28silverstreak's Avatar
 
Join Date: Nov 2009
Location: Hudson, IL
Posts: 37
4L60E Transmission Issues

Alright here's what I've got. I've got a '98 Z28 that's got 112k miles on her,a mild cam, and a few other bolt on's that are irrelevant. I just picked her up for practically nothing. I've got it running great now, and took it for a quick cruise to see what it would do. It makes the transitions from N-R and N-1 just fine, makes 1-2 fine, and at about 25 mph in second it feels like it goes into neutral. However, from a dead stop it made it to 80 mph in third with no problems. When in 2nd, after it feels like it goes to neutral I let off completely and I can feel it lock back into second. According to my Snap-On Solus scan tool, the TPS is working alright, and there are no codes from engine or trans. Does anybody have any insight on this? Your help is greatly appreciated.
__________________
1996 Z28, 1978 LT, 1980 Z28, 1993 Z28 Camaros...**Sold**

1998 Camaro Z28..."Junkyard Jenny" (Under Construction)
Z28silverstreak is offline   Reply With Quote
Old 03-06-2013, 03:35 PM   #2
Registered User
 
WhiteHawk's Avatar
 
Join Date: Feb 2004
Posts: 943
Re: 4L60E Transmission Issues

Quote:
Originally Posted by Z28silverstreak View Post
Alright here's what I've got. I've got a '98 Z28 that's got 112k miles on her,a mild cam, and a few other bolt on's that are irrelevant. I just picked her up for practically nothing. I've got it running great now, and took it for a quick cruise to see what it would do. It makes the transitions from N-R and N-1 just fine, makes 1-2 fine, and at about 25 mph in second it feels like it goes into neutral. However, from a dead stop it made it to 80 mph in third with no problems. When in 2nd, after it feels like it goes to neutral I let off completely and I can feel it lock back into second. According to my Snap-On Solus scan tool, the TPS is working alright, and there are no codes from engine or trans. Does anybody have any insight on this? Your help is greatly appreciated.
From a dead stop you were at wide open throttle up to 80? Did you check the fluid?

-Geoff
__________________
11 Silverado - No times yet.
99Z28 - 11.91@118.5. 403 L76/L92 with street tires and launching with the traction control.
WhiteHawk is offline   Reply With Quote
Old 03-06-2013, 03:47 PM   #3
Registered User
 
Z28silverstreak's Avatar
 
Join Date: Nov 2009
Location: Hudson, IL
Posts: 37
Re: 4L60E Transmission Issues

Yes, fluid is right where it should be when hot, is not burnt and is brand new. When I left for the first drive it always seemed like it went into neutral at a certain sweet spot, and if I let off and feel it go into gear, I get all over it and it burns the tires, but under light throttle it does the same thing. Does the TCM need to see throttle percentage separate of the ECM?
__________________
1996 Z28, 1978 LT, 1980 Z28, 1993 Z28 Camaros...**Sold**

1998 Camaro Z28..."Junkyard Jenny" (Under Construction)
Z28silverstreak is offline   Reply With Quote
Old 03-06-2013, 03:54 PM   #4
Registered User
 
Z28silverstreak's Avatar
 
Join Date: Nov 2009
Location: Hudson, IL
Posts: 37
Re: 4L60E Transmission Issues

Also the fluid that I drained was not burnt, and did not have any metallic powder in it.
__________________
1996 Z28, 1978 LT, 1980 Z28, 1993 Z28 Camaros...**Sold**

1998 Camaro Z28..."Junkyard Jenny" (Under Construction)
Z28silverstreak is offline   Reply With Quote
Old 03-07-2013, 03:13 PM   #5
Registered User
 
Z28silverstreak's Avatar
 
Join Date: Nov 2009
Location: Hudson, IL
Posts: 37
Re: 4L60E Transmission Issues

Thanks for the help guys, I ended up removing the valve body and applying air to the clutch apply passageways, and the 1-2 clutch pack leaks a little and the 3-4 clutch pack leaks A LOT...time to yank it out and put a 6 speed in it!
__________________
1996 Z28, 1978 LT, 1980 Z28, 1993 Z28 Camaros...**Sold**

1998 Camaro Z28..."Junkyard Jenny" (Under Construction)
Z28silverstreak is offline   Reply With Quote
Reply Post New Thread

Similar Threads
Thread Thread Starter Forum Replies Last Post
My next project... thenewkid LT1 Based Engine Tech 4 04-12-2015 08:42 PM
transmission woes 95 z28 jackpawt883 General 1967-2002 F-Body Tech 1 02-26-2015 10:04 PM
hey hey hey thenewkid New Member Introduction 5 11-27-2014 10:41 AM
Selling my 1995 3.4 V6, $1200 Snoman73 Cars For Sale 0 11-17-2014 08:22 PM
My Yank Transmission story, or How I broke A th-400 with 320rwhp Trans Am WS6 420 LS1 Based Engine Tech 3 07-19-2002 07:58 AM


Tags
4l60e, ls1, trans

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 On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 07:13 PM.

 

Copyright © 1996-2013 CamaroZ28.Com. All rights reserved.