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

Head Swap. Now it wont Idle

Thread Tools
 
Search this Thread
 
Old Aug 7, 2009 | 07:45 AM
  #1  
01CamaroZ28's Avatar
Thread Starter
TECH Enthusiast
iTrader: (9)
 
Joined: Jan 2007
Posts: 564
Likes: 0
From: Orlando, FL
Default Head Swap. Now it wont Idle

I swapped my heads with some lower mile 241's and replaced the lifters and lifter trays. Connected everything and fired it up last night. Only problem is it wont hold an idle. No SES lights or codes. The engine sounds normal but it is running rich by the smell of the exhaust. Any suggestions on what to check/double check? thanks, phil


*alright so update*...over lunch i did a little wrenching and found the problem. The o2 wire was pinched a bit. So i fixed that and took it for a little spin. Seemed to do fine. the rpms started going up as i went down a hill and i pushed the clutch out and the were still rising so i shut the car off. waited 5 mins or so started and drove normally mind you im on base so 25 or so. Any reason why the rpms would surge like that?

Last edited by 01CamaroZ28; Aug 7, 2009 at 12:34 PM.
Reply
Old Aug 7, 2009 | 08:15 AM
  #2  
Dennis@SpectacleSolutions's Avatar
LS1Tech Sponsor
iTrader: (16)
 
Joined: Jan 2008
Posts: 811
Likes: 0
Default

vacum leak maybe? make sure the oring seals in the intake are all seated properly.
Reply
Old Aug 7, 2009 | 08:29 AM
  #3  
01CamaroZ28's Avatar
Thread Starter
TECH Enthusiast
iTrader: (9)
 
Joined: Jan 2007
Posts: 564
Likes: 0
From: Orlando, FL
Default

would a bad O2 sensor cause this?
Reply
Old Aug 7, 2009 | 08:29 AM
  #4  
matt1289's Avatar
TECH Apprentice
 
Joined: Feb 2007
Posts: 369
Likes: 14
From: Canton, GA
Default

needs tuned most likely. My car ran like **** when I first swapped everything. Oh wait your using the same heads. I would check the 02's and MAF.
Reply
Old Aug 7, 2009 | 08:33 AM
  #5  
01CamaroZ28's Avatar
Thread Starter
TECH Enthusiast
iTrader: (9)
 
Joined: Jan 2007
Posts: 564
Likes: 0
From: Orlando, FL
Default

they are the same heads i had on before just lower miles. no porting or anything
Reply
Old Aug 7, 2009 | 12:33 PM
  #6  
01CamaroZ28's Avatar
Thread Starter
TECH Enthusiast
iTrader: (9)
 
Joined: Jan 2007
Posts: 564
Likes: 0
From: Orlando, FL
Default

alright so update...over lunch i did a little wrenching and found the problem. The o2 wire was pinched a bit. So i fixed that and took it for a little spin. Seemed to do fine. the rpms started going up as i went down a hill and i pushed the clutch out and the were still rising so i shut the car off. waited 5 mins or so started and drove normally mind you im on base so 25 or so. Any reason why the rpms would surge like that?
Reply




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

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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