LT1-LT4 Modifications 1993-97 Gen II Small Block V8

still having problems

Thread Tools
 
Search this Thread
 
Old Oct 1, 2009 | 02:45 PM
  #1  
kalebm22's Avatar
Thread Starter
Restricted User
iTrader: (2)
 
Joined: Feb 2009
Posts: 707
Likes: 0
Default still having problems

i have changed teh oxegyn sensors, maf sensor, optispark, fuel pump, computer tunes. and computer.
but i am still haveing a sputtering problem and my afr gauge shows its going lean when im having the problem. what could cause it to do this that i havnt changed yet?
Reply
Old Oct 1, 2009 | 03:00 PM
  #2  
trippinholyman's Avatar
Launching!
 
Joined: Feb 2009
Posts: 280
Likes: 0
From: bodymore
Default

clogged injectors? try running some seafoam through the tank. hows your fuel pressure? not enough fuel getting to it, so maybe theres a leak somewhere or something.
Reply
Old Oct 1, 2009 | 03:04 PM
  #3  
kalebm22's Avatar
Thread Starter
Restricted User
iTrader: (2)
 
Joined: Feb 2009
Posts: 707
Likes: 0
Default

well i changed teh injectors too, still having the problem. for some reason my fuel pressure gauge stoppeed working so im not sure on the fuel pressure. but i only have teh problem after the car gets up to operating temperatures
Reply
Old Oct 1, 2009 | 03:09 PM
  #4  
jarretthise's Avatar
TECH Fanatic
iTrader: (9)
 
Joined: Dec 2007
Posts: 1,140
Likes: 1
From: crawfordsville, IN
Default

icm or coil it sounds like.. sounds like the coil or icm is breaking down.. when they go bad or get old the particles breakdown in them when hot.
Reply
Old Oct 1, 2009 | 03:12 PM
  #5  
kalebm22's Avatar
Thread Starter
Restricted User
iTrader: (2)
 
Joined: Feb 2009
Posts: 707
Likes: 0
Default

Originally Posted by jarretthise
icm or coil it sounds like.. sounds like the coil or icm is breaking down.. when they go bad or get old the particles breakdown in them when hot.
i have and msd coil on it that i put on not long ago, but how would one of those things make the car run lean?
Reply
Old Oct 1, 2009 | 03:20 PM
  #6  
jarretthise's Avatar
TECH Fanatic
iTrader: (9)
 
Joined: Dec 2007
Posts: 1,140
Likes: 1
From: crawfordsville, IN
Default

well if the icm is breaking down then your car is going rough.. causing your car to have a misfire therefore reading lean and not really actually having a fuel problem.. had this happen on a 3.8 i worked on..
Reply
Old Oct 1, 2009 | 04:38 PM
  #7  
myltwon's Avatar
TECH Addict
iTrader: (1)
 
Joined: Jul 2004
Posts: 2,965
Likes: 7
From: Palm Harbor, FL
Default

hook up a fuel pressure gauge and check for vacuum leaks (also post maf leaks)
Reply
Old Oct 3, 2009 | 01:03 AM
  #8  
kalebm22's Avatar
Thread Starter
Restricted User
iTrader: (2)
 
Joined: Feb 2009
Posts: 707
Likes: 0
Default

Originally Posted by jarretthise
well if the icm is breaking down then your car is going rough.. causing your car to have a misfire therefore reading lean and not really actually having a fuel problem.. had this happen on a 3.8 i worked on..
well i switched my icm and coil with a friends and i still had the same problem, i also just replaced the manifold pressure sensor and the air temp sensor. i think i will be able to check the fuel pressure monday.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-1

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-2

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-3

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-4

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-5

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-6

10 Camaros You Should Never Buy

 
story-7

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
story-8

Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

 Brett Foote
story-9

10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

 Verdad Gallardo




All times are GMT -5. The time now is 02:12 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

Slideshow: The 7.0-liter LS7 was designed for absolute cutting-edge performance.

By Verdad Gallardo | 2026-01-07 18:36:00


VIEW MORE