The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-18-2005, 01:03 PM   #1
1980 Chevy
Registered User
 
1980 Chevy's Avatar
 
Join Date: Apr 2004
Location: Burleson, Texas
Posts: 55
Ignition Module Question

Last week my truck motor would turn over and act like it wanted to start (strong turning), but just wouldn't fire. A few of you suggested I change the ignition module, which I did and it started like it was brand new. Now my wife just called and said it's acting like it did...turns strong, but just not getting fire. Which makes me think if it replacing it worked, I should do it again. However, even though it's only about 20 bucks, I don't think it's normal to have to replace it weekly. Does anyone have any idea of why this puppy would go bad within a week?
Thanks again folks!
1980 Chevy is offline   Reply With Quote
Old 05-18-2005, 01:04 PM   #2
1980 Chevy
Registered User
 
1980 Chevy's Avatar
 
Join Date: Apr 2004
Location: Burleson, Texas
Posts: 55
oh yea. it's a 454 with an HEI distributor if that helps anyone.
1980 Chevy is offline   Reply With Quote
Old 05-18-2005, 01:16 PM   #3
ocbaud
Garage Queen Material
 
Join Date: Oct 2002
Location: USA
Posts: 4,129
you're wrong, it is normal to replace it weekly.



ok, not really. sorry i cant help any more
ocbaud is offline   Reply With Quote
Old 05-18-2005, 01:25 PM   #4
1980 Chevy
Registered User
 
1980 Chevy's Avatar
 
Join Date: Apr 2004
Location: Burleson, Texas
Posts: 55
OK ocbaud...since it's normal, I'm off to replace it again, ha! I think I'll buy a spare too.
1980 Chevy is offline   Reply With Quote
Old 05-18-2005, 01:25 PM   #5
hotrodhomi
Registered User
 
hotrodhomi's Avatar
 
Join Date: Apr 2004
Location: Sacramento
Posts: 3,737
maybe a loose connection?
hotrodhomi is offline   Reply With Quote
Old 05-18-2005, 01:33 PM   #6
86-C10-V6
Shadetree Mechanic
 
86-C10-V6's Avatar
 
Join Date: Oct 2002
Location: Youngsville, NC
Posts: 100
Make sure you clean the mounting service

& apply liberal amount of heak sink compound.
Then make sure to apply plenty of torque to the mounting screws to press out any extra compound.
Heat is what normally kills the module, also a bad coil can cause the module fail if it is parially shorted.
Good Luck
__________________
Dave M. (Hacksaw)
86 C10 Scottsdale LWB, 4.3L, Edelbrock 1904, K&N, 700R4, 3.08 Auburn Performance
89 GMC S-15 Extended Cab 4x4, 4.3L, FI
98 K1500 Xcab, 5.7L, 3.43 Gov-Lok
86-C10-V6 is offline   Reply With Quote
Old 05-18-2005, 02:10 PM   #7
PHOENIX
Registered User
 
Join Date: Oct 2002
Location: Phoenix, Arizona
Posts: 4,703
If you determine it is the module or decide to change the module again:

Ever thought about trying the MSD Module?
I had a lot of module problems in the past and switched to a MSD module and didnt have any more problems.
Then I switched to the whole MSD distributor.

I just noticed the old one isnt available, now it has a rev limiter, sweet!

SummitRacing.com

__________________
* AVOID: LOPER'S PERMORANCE / LOPERSPEED.COM OF PHOENIX, AZ & COTTMAN TRANSMISSION *

Last edited by PHOENIX; 05-18-2005 at 02:11 PM.
PHOENIX is offline   Reply With Quote
Old 05-18-2005, 02:33 PM   #8
1980 Chevy
Registered User
 
1980 Chevy's Avatar
 
Join Date: Apr 2004
Location: Burleson, Texas
Posts: 55
Hotrodhomi wins! First thing I did was push on those two connections, got in and it fired right up. One of the clips that holds it in tight broke off, so I'll have to rig it until I can replace that.
I'll check in to that MSD Module Phoenix. I enjoy fixing up this truck, just don't like to "have" to because of a hard break.
Thanks again folks!
1980 Chevy is offline   Reply With Quote
Old 05-18-2005, 03:33 PM   #9
hotrodhomi
Registered User
 
hotrodhomi's Avatar
 
Join Date: Apr 2004
Location: Sacramento
Posts: 3,737
glad you didn't have to walk or tow.
hotrodhomi is offline   Reply With Quote
Old 05-18-2005, 10:01 PM   #10
screwballl
Tonawanda 454
 
screwballl's Avatar
 
Join Date: Mar 2004
Location: Liquid Sunshine State
Posts: 2,754
i replaced the module in my 76 with HEI (350) and it was fine for a month or so but it bascially dies again whenever high humidity or it rains just like before... so i need to get a dist boot or better dist setup... oh wait im selling it so i wont do it...
__________________
91 Chevy Suburban Tonawanda 454 R2500 - SOLD!!!
04 Dodge Durango 5.7L Hemi 2WD, 24K miles (as of July 2011)
In the past 30 years about 90% of Fords are still on the road, the other 10% made it home.
-------------------
screwballl is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -4. The time now is 08:37 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com