Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

4l80e stall lockup slipping please

Thread Tools
 
Search this Thread
 
Old Sep 21, 2012 | 08:55 PM
  #1  
AJR's Avatar
AJR
Thread Starter
Registered User
 
Joined: May 2012
Posts: 5
Likes: 0
Default 4l80e stall lockup slipping please

Have a 2007 silverado with a 4l80e swap, installed a 3000 stall from EDGE, locks up with very little throttle, going up a bridge or giving it more gas starts slipping.
I dont think is the stall, been hearing good things about EDGE converters, its like its not getting enough pressure for lockup.
Been reading about this issue and its usually the converter but thats with stock torque converters, also the AFL valve can be an issue when it gets wore out.

Would changing valve body fix this issue? Any body from houston know a shop that can repair the AFL valve bore?
Reply
Old Sep 21, 2012 | 09:23 PM
  #2  
mike13's Avatar
10 Second Club
iTrader: (27)
 
Joined: Sep 2008
Posts: 2,229
Likes: 0
From: Lake Tapps, WA
Default

sounds normal, the lock up clutch is designed to slip and allow the vehicle to accelerate. The majority of lockup clutches aren't detectable unless you know what your looking for. People usually think it's shifting into another gear.
Reply
Old Sep 21, 2012 | 09:38 PM
  #3  
AJR's Avatar
AJR
Thread Starter
Registered User
 
Joined: May 2012
Posts: 5
Likes: 0
Default

Originally Posted by mike13
sounds normal, the lock up clutch is designed to slip and allow the vehicle to accelerate. The majority of lockup clutches aren't detectable unless you know what your looking for. People usually think it's shifting into another gear.
I thought the lockup clutch was not design to slip, and if I let it slip it unlocks and wont lock up again until I turn off and turn on the truck, throws the code for component slipping
Reply
Old Sep 21, 2012 | 10:50 PM
  #4  
Cam72aro's Avatar
TECH Addict
iTrader: (28)
 
Joined: Feb 2006
Posts: 2,137
Likes: 1
From: Sugar Land, Tx
Default

It unlocks and the converter starts slipping. Are you sure its locked and slipping? It might be unlocking based on the description you gave.
Reply
Old Sep 21, 2012 | 10:56 PM
  #5  
AJR's Avatar
AJR
Thread Starter
Registered User
 
Joined: May 2012
Posts: 5
Likes: 0
Default

Originally Posted by Cam72aro
It unlocks and the converter starts slipping. Are you sure its locked and slipping? It might be unlocking based on the description you gave.
logged it with hp tuners and it stays locked but slips, also when the transmission is warm it slips more
Reply
Old Sep 21, 2012 | 11:26 PM
  #6  
BoxeDK's Avatar
Staging Lane
 
Joined: May 2012
Posts: 71
Likes: 0
From: Denmark
Default

It sounds like not enough oil pressure.
I would look for possible dirt in oilpan and filter. If that is clean, it might be a bad lockup solenoid.
At least that could be on at 4L60. I am not quite sure if it is the same solenoid on a 4L80E.

Any expert on here know this?


Posted from LS1Tech.com App for Android
Reply




All times are GMT -5. The time now is 02:06 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE