PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Big Stuff 3 Issues... Help

Thread Tools
 
Search this Thread
 
Old Feb 13, 2009 | 01:34 PM
  #1  
TrakDay's Avatar
Thread Starter
9 Second Club
iTrader: (7)
 
Joined: Feb 2005
Posts: 866
Likes: 1
Default Big Stuff 3 Issues... Help

I have a BS3 Gen 3 ECU in my GTO. The unit itself is working fine for the most part and does everything I need it to do. But I am having one very annoying problem.

When I connect my PC to the ECU without the car running it will stay connected forever and let me make changes as I please and save and update whatever I need to. The problem is that when I start the car and its running with the PC connected. About 5-8 seconds after I give the car any RPM at all it will disconnect the ECU from the PC and will not reconnect unless i turn the car off and start the process over. If the car is just idling it will stay connected for a while before disconnecting, but only like 2-3 minutes if I am lucky. I have checked all my connections and swapped the serial cable as well as the serial to USB adapter and none of this has fixed the issue.

Does anyone have any suggestions. Big Stuff is backed up like 2-3 weeks and I don't have time for that right now. I have also verified and made sure I have the most current BS3 software on my laptop. We have hooked up 4 different laptops to the car with no success!
Reply
Old Feb 13, 2009 | 01:43 PM
  #2  
Frost's Avatar
FormerVendor
iTrader: (45)
 
Joined: Jul 2005
Posts: 5,913
Likes: 2
From: Richmond VA
Default

you aren't running non resistor plugs such as TR8s are you? I have had them interfere with comms to/from other items and at idle. Not saying that's it, just a possibility...
Reply
Old Feb 13, 2009 | 02:01 PM
  #3  
qqwqeqwrqwqtq's Avatar
FormerVendor
 
Joined: Dec 2001
Posts: 2,444
Likes: 2
From: WWW.SPEEDINC.COM
Default

Originally Posted by Frost
you aren't running non resistor plugs such as TR8s are you? I have had them interfere with comms to/from other items and at idle. Not saying that's it, just a possibility...
I've had non-resistor plugs drop the wideband out on BS3 as well
Reply
Old Feb 13, 2009 | 02:11 PM
  #4  
TrakDay's Avatar
Thread Starter
9 Second Club
iTrader: (7)
 
Joined: Feb 2005
Posts: 866
Likes: 1
Default

Originally Posted by INTMD8
I've had non-resistor plugs drop the wideband out on BS3 as well
I spoke with someone at BS3 right after I posted this. Been trying to get ahold of them all day. He is thinking it is directly related to my voltage issue which seems to have gotten worse over time. Gonna test the alternator and check my wiring and take it from there for now!
Reply
Old Feb 14, 2009 | 09:55 AM
  #5  
Old Geezer's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Jun 2004
Posts: 5,639
Likes: 71
From: GA, USA
Default

Logging batt volts?
Reply
Old Feb 14, 2009 | 10:11 AM
  #6  
Tzion_ben_Arthur's Avatar
TECH Regular
iTrader: (19)
 
Joined: Sep 2007
Posts: 468
Likes: 0
From: Broken Arrow, OK
Default

keep us posted. I have had my EFILive drop out like this under WOT.
Reply




All times are GMT -5. The time now is 05:22 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