PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

LS1 Coils

Thread Tools
 
Search this Thread
 
Old Jul 31, 2009 | 04:18 PM
  #1  
crash33's Avatar
Thread Starter
Registered User
 
Joined: Jul 2009
Posts: 3
Likes: 0
Default LS1 Coils

First post here. Sent over by the guys at the GTM area of FFCobra.

Talk on another forum reminded me that it was time for me to start the rotary bridgeport up (the engine not the mill) and in so trying to, it fouled the plugs rather quickly. This doesn't usually happen as I have built a direct fire system using a Haltech controller and LS1 Denso coil packs that deliver a TON of spark. Anyway, long story short two of the coil packs are no good. They have burn through spots on the ignitor area right above the ground pin in the connector.

Few questions.

1) Anyone else had this issue?
2) In searching the internet I find that the low referrence pin sometimes is suggested to be grounded and sometimes not. I used mine grounded. Any comments?
3) Any known source that is reasonable price wise? My local dealer wants $85 per coil!!
4) If anyone has done a custom hookup for these, what voltage are you using?

This may have to do with a spike from my 200 AMP alternator when the regulator fried, but trying to eliminate anything else as well.

Any help is appreciated.
Reply
Old Aug 4, 2009 | 01:09 PM
  #2  
crash33's Avatar
Thread Starter
Registered User
 
Joined: Jul 2009
Posts: 3
Likes: 0
Default

Thanks for the help guys. This forum is everything I was told it was.
Reply
Old Aug 4, 2009 | 02:31 PM
  #3  
DrkPhx's Avatar
10 Second Club
iTrader: (15)
 
Joined: Nov 2001
Posts: 4,519
Likes: 0
From: St. Michael, MN.
Default

Originally Posted by crash33
Thanks for the help guys. This forum is everything I was told it was.
Lol. Your problem is somewhat unique to the users here because most of us still use the stock PCM, harness, coils and connectors which are a proven reliable and durable setup. Rarely do these coils fails.

1) Anyone else had this issue?
Check the Conversions & Hybrid section here. I know some of import owners like Audi and Mazda use this coil for an upgrade, maybe one those forums might be able to help you.

2) In searching the internet I find that the low referrence pin sometimes is suggested to be grounded and sometimes not. I used mine grounded. Any comments?
The pin connector is different for some of the coils. What exact coil are you using? Depending on the actual version (97-05), I may be able to get you a pin layout from the GM Manual itself.

3) Any known source that is reasonable price wise? My local dealer wants $85 per coil!!
$85 is way too high for one coil. Check the classifieds here or on ebay for a better price. Stick to the OEM AC Delco coils, not the China stuff.

4) If anyone has done a custom hookup for these, what voltage are you using?
Definitely a question for someone who has done this before.

This may have to do with a spike from my 200 AMP alternator when the regulator fried, but trying to eliminate anything else as well.

It's hard to diagnose eletrical problems over the internet, but based on this comment "They have burn through spots on the ignitor area right above the ground pin in the connector" I would assume this could be the case.
Reply
Old Aug 4, 2009 | 03:52 PM
  #4  
DrkPhx's Avatar
10 Second Club
iTrader: (15)
 
Joined: Nov 2001
Posts: 4,519
Likes: 0
From: St. Michael, MN.
Default

Here's a goods link that may help.

http://www.megamanual.com/seq/coils.htm
Reply
Old Aug 17, 2009 | 04:59 PM
  #5  
crash33's Avatar
Thread Starter
Registered User
 
Joined: Jul 2009
Posts: 3
Likes: 0
Default

Hey, thanks a lot. That Megasquirt article has lots of useful info.

I had given up on this site, but you really came through for me. Thanks!
Reply




All times are GMT -5. The time now is 06:37 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