Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

5.3 drivers side bank dead. Sometimes

Thread Tools
 
Search this Thread
 
Old Sep 29, 2010 | 01:06 PM
  #1  
mayo's Avatar
Thread Starter
Teching In
 
Joined: Jan 2009
Posts: 2
Likes: 0
Default 5.3 drivers side bank dead. Sometimes

Stumped. Only trouble code is lean on drivers side bank of cylinders. Will crank on 8 cylinders than randomly drop drivers bank or vice versa. Always drops drivers side only. Have combustion in exhaust when running on only 4 cylinders at idle, continually. When running on 8 will do also have exhaust explosions if the engine is reved quickly. New wiring harness from Hotwire was sent back to double check correctness as well as computer. Both reports as correct. Engine been sitting for several years, tank drained with new fuel and concentrated Gunk fuel additives to clean injectors. Help. Been wrestling with this for over 6 months!! No joy!! Mayo
Reply
Old Sep 29, 2010 | 06:47 PM
  #2  
SSPerformance's Avatar
8 Second Club
20 Year Member
iTrader: (76)
 
Joined: Jun 2004
Posts: 2,902
Likes: 0
From: Goshen NY
Default

Is it setup to have seperate fuse for each bank? if so check the fuses. what are you swaping it into... i no when u swap a fbody v6 to a v8 you to add a fuse for the pass side bank
Reply
Old Oct 2, 2010 | 08:38 AM
  #3  
mayo's Avatar
Thread Starter
Teching In
 
Joined: Jan 2009
Posts: 2
Likes: 0
Default

Problem solved. When I pulled the coil racks off the engine to paint them designer red I accidently got the drivers side of the coil wiring harness turned upside down when reattaching the coil wiring connectors. This was done before I ever started the engine so I never suspected this. What a nightmare! What a simple solution. Thanks for the suggestion. Incidently, this engine was a conversion in my 1980 CJ7 Jeep. After my first chance to drive it yesterday, it runs like a striped *** ape now! Wow!!
Reply
Old Oct 2, 2010 | 10:40 AM
  #4  
Bramlok's Avatar
TECH Enthusiast
iTrader: (7)
 
Joined: Jun 2010
Posts: 635
Likes: 0
From: IL
Default

Glad you got it fixed. Sounds like a fun conversion you did with the Jeep.
Reply




All times are GMT -5. The time now is 04:06 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

The world was a better place when it was still around.

By Brett Foote | 2026-01-23 09:20:37


VIEW MORE