HEI problems--- help - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Electrical
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 07-01-2006, 03:52 AM
Registered User
 
Join Date: Jul 2006
Location: alexandria, va
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
HEI problems--- help

changed a motor in an 84 chevy c-20 for a friend from a 305 to a 350 reusing the HEI distbutor, we took off all the emissions stuff as it's not required where he lives and all the computer stuff since it was basically nothing but a pain in the butt and didn't amount to anything but controling couple of thermal controls, now the problem he is having is he has had 2 hei modules die on him in 6 months, reconnected hei to the same wiring the engine runs perfect until the module dies with no warning, anyone got any ideas to help me out, thanks

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 07-01-2006, 05:45 AM
S10Fan's Avatar
Garage Filler
 

Last journal entry: I need more time!
Last photo:
Join Date: Oct 2003
Location: Newport News Virginia
Age: 57
Posts: 302
Wiki Edits: 0

Thanks: 1
Thanked 0 Times in 0 Posts
It could be due to a bad batch of modules from the manufacturer. Is he buying the cheap ones? Are you guys using the grease that goes under the module?
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 07-01-2006, 05:48 AM
Registered User
 
Join Date: Jul 2006
Location: alexandria, va
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
HEI problems

using the delco modules and i sent him the first one and i live in va. and he bought the second delco in tampa fla., thanks
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 07-01-2006, 05:51 AM
Registered User
 
Join Date: Jul 2006
Location: alexandria, va
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
HEI problems

sorry bout that, not sure about the grease under the module, i'll have to check,
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 07-01-2006, 05:55 AM
S10Fan's Avatar
Garage Filler
 

Last journal entry: I need more time!
Last photo:
Join Date: Oct 2003
Location: Newport News Virginia
Age: 57
Posts: 302
Wiki Edits: 0

Thanks: 1
Thanked 0 Times in 0 Posts
Sounds like module quality isn't a problem. Other than the grease I don't have any further info. Hopefully docvette will reply.

Flat tires are a lot easier to fix. LOL.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 07-01-2006, 06:38 AM
kain13's Avatar
Registered User
 
Last photo:
Join Date: Apr 2006
Location: lubbock,Tx
Age: 38
Posts: 120
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
make sure you have good grounds bad grounds will fry a module quick
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 07-01-2006, 06:47 AM
Registered User
 
Join Date: Jul 2006
Location: alexandria, va
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
HEI problems

ok thanks i'll double check both grounds in the cap and the engine ground
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 07-01-2006, 05:06 PM
docvette's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Rebuild an alternator Last photo:
Join Date: Mar 2004
Location: Lafayette, california
Age: 62
Posts: 7,362
Wiki Edits: 12

Thanks: 0
Thanked 6 Times in 3 Posts
Doc here,

Be sure it has plenty of heat sink grease..without it or not enough will fry a module quickly, they are very heat sensitive..don't get sloppy with it but generous..

Pull and invert the cap, look for carbon trails, from the towers down to the base of the cap..If you find ANY GET A NEW CAP.

Same applies for the rotor..

Be sure the plug wires are proper for an HEI AND all are good..as well as proper gap and condition of the plugs..open wires , shouted plugs and every time that cylinder fires, you have 40 kv all dressed up and nowhere to go..it will find comfort in the module ground.."PoP"...

Lastly get a diode check on the alternator, If one or more are bad, the alternator will pass AC (raw alternator power) back into the system and fry a module (as well as any other linear op amp or HMOS / CMOS electronics)..

Check also the tach and tach wire for intermittent shorting..

Doc
__________________
Aftermarket Solutions
Electronic & Electrical
Innovations
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 07-01-2006, 09:23 PM
Registered User
 
Join Date: Jul 2006
Location: alexandria, va
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
HEI problems

thanks, that gives me a few things to look at
Reply With Quote Quick reply to this message

Recent Electrical posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
HEI wires getting hot! JoeAce Electrical 11 02-18-2006 03:53 AM
HEI Brand Names pcesak Engine 4 05-14-2003 09:18 AM
pontiac HEI issues Jared Engine 4 04-17-2003 12:15 PM
Do I Need Little HEI Box for New HEI Dist? Mr.56Chevy Electrical 0 12-23-2002 02:38 PM
Power to HEI Seon Electrical 3 09-27-2002 03:03 PM


All times are GMT -6. The time now is 11:00 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.