Conversions & Swaps LSX Engines in Non-LSX Vehicles
Sponsored by:
Sponsored by:

4l80e questiom

Thread Tools
 
Search this Thread
 
Old Jan 21, 2016 | 04:59 PM
  #1  
autocomman's Avatar
Thread Starter
On The Tree
 
Joined: Aug 2013
Posts: 188
Likes: 0
Default 4l80e questiom

So I've finally been putting some miles on my lq4/4l80e swapped olds wagon. My question is about the tcc. Cruising at highway speeds in 4th it will lock up and stays locked up till I'm almost tipped out of the gas or totally tipped out. Roll back in the throttle and it locks up again...this is freaking annoying. Off the gas unlocked, back on the gas...Aaaand it locks. I'd love for it to stay locked until you really get on it or force a downshift. Driving in LA traffic lots of times your in an off the gas alot.

This pretty normal for a stock ecu? The donor was an 03 2500hd. The tune is stock, only thing we did to the ecu was take a 1500ss tune and drop it in with the 4l80e module in hp tuners for smog reasons. The 1500 has 2 cats the 2500 has 4 and I didn't want to run 4

Mark
Reply
Old Jan 21, 2016 | 05:49 PM
  #2  
1989GTA's Avatar
TECH Junkie
 
Joined: Dec 2005
Posts: 3,092
Likes: 11
Default

I don't know if that is normal or not. However a tuner can fix that for you.
Reply
Old Jan 21, 2016 | 06:29 PM
  #3  
BOOSTAT4500's Avatar
TECH Regular
iTrader: (17)
 
Joined: Apr 2003
Posts: 482
Likes: 0
From: Reno, NV
Default

Yes, it's normal, and can be changed in the tune to stayed locked.
Reply
Old Jan 21, 2016 | 10:29 PM
  #4  
autocomman's Avatar
Thread Starter
On The Tree
 
Joined: Aug 2013
Posts: 188
Likes: 0
Default

Thoughts on keeping it locked or suggested changes to the trans software?
Reply
Old Jan 21, 2016 | 10:40 PM
  #5  
truckdoug's Avatar
9 Second Club
10 Year Member
Liked
Loved
Community Favorite
iTrader: (26)
 
Joined: Nov 2013
Posts: 6,389
Likes: 558
From: Portlandia
Default

you can change the lock up timing based on speed or throttle position. i have mine set to come on at low rpm after 4th gear is reached and to unlock at 65% throttle. you can also set delay time too. I was having trouble with the pwm lock up and ditched that as well.
you just gonn have to play with it and see what works for you
Reply
Old Jan 21, 2016 | 11:15 PM
  #6  
BOOSTAT4500's Avatar
TECH Regular
iTrader: (17)
 
Joined: Apr 2003
Posts: 482
Likes: 0
From: Reno, NV
Default

This is using HP Tuners:
http://www.hptuners.com/forum/showth...-at-0-Throttle
Reply




All times are GMT -5. The time now is 10:10 AM.

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