PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Ls1 Edit Idle Problems.. How to fix stalling/no start with big cam

Thread Tools
 
Search this Thread
 
Old Sep 30, 2002 | 04:55 PM
  #1  
shane buss's Avatar
Thread Starter
Teching In
 
Joined: Sep 2002
Posts: 23
Likes: 0
From: houston tx
Default Ls1 Edit Idle Problems.. How to fix stalling/no start with big cam

Guys i know this has been beat to death, but i still cannot find the answers im looking for anywhere.

I have a hotcam and ls1edit, and although ive raised the idle and it is a little better, it still will not start without giving it gas, and it still stumbles sometimes. Idle is already at around 875 rpm across the board, i hate to raise it more. Is there something like Less timing, or changing the IAC park position to 0 that might help? What about changing the fuel at idle?

My iac counts are great, ive drilled the TB out and raised the idle screw. Ltrims look good also. Car is a A4 with a 2800-3000 stall converter. I'm wondering if the Ed Wright could fix this. People that have had their PCM custom tuned, do you have this problem still? I've seen a few responses that say there is no way to fix the Hot start problem, but im not giving up yet. ;-)

The hotcam isnt even that big!
Thanks,
Shane
Reply
Old Sep 30, 2002 | 09:30 PM
  #2  
DriveATransAm's Avatar
TECH Junkie
 
Joined: Nov 2001
Posts: 3,029
Likes: 0
From: Chi-Town
Default Re: Ls1 Edit Idle Problems.. How to fix stalling/no start with big cam

dude, i have the SAME FREAKIN PROBLEM with the comp 224 112 cam. its tuned and i brought it to speed inc and they said theres really nothing they can do for the start. it starts fine the first 10 times after an idle relearn, then goes back to its old ways. wtf?
Reply
Old Sep 30, 2002 | 09:57 PM
  #3  
shane buss's Avatar
Thread Starter
Teching In
 
Joined: Sep 2002
Posts: 23
Likes: 0
From: houston tx
Default Re: Ls1 Edit Idle Problems.. How to fix stalling/no start with big cam

PROBLEM SOLVED! see my other post.. basically you just set your IAC park position HIGHER, and i also raised my IAC IN gear by about 30%.

Now it starts and idles BEAUTIFULLY even when its hot and a/c is on. I was even able to lower my idle back in the 700's with NO PROBLEMS.

I think i set my IAC PARK to 21 for any temp above 24, and raised the IN gear by 30%.. let me know if you needm ore specifics@!
Reply
Old Sep 30, 2002 | 10:01 PM
  #4  
shane buss's Avatar
Thread Starter
Teching In
 
Joined: Sep 2002
Posts: 23
Likes: 0
From: houston tx
Default Re: Ls1 Edit Idle Problems.. How to fix stalling/no start with big cam

see my other post, i fixed it... IAC in park needs to be set to around 21 above 24 degrees. IAC in gear i raised by like 30%
Reply




All times are GMT -5. The time now is 01:23 PM.

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