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Old 05-18-2005, 01:03 PM   #1
1980 Chevy
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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!
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Old 05-18-2005, 01:04 PM   #2
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oh yea. it's a 454 with an HEI distributor if that helps anyone.
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Old 05-18-2005, 01:16 PM   #3
ocbaud
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you're wrong, it is normal to replace it weekly.



ok, not really. sorry i cant help any more
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Old 05-18-2005, 01:25 PM   #4
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OK ocbaud...since it's normal, I'm off to replace it again, ha! I think I'll buy a spare too.
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Old 05-18-2005, 01:25 PM   #5
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maybe a loose connection?
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Old 05-18-2005, 01:33 PM   #6
86-C10-V6
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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
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Old 05-18-2005, 02:10 PM   #7
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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

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Last edited by PHOENIX; 05-18-2005 at 02:11 PM.
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Old 05-18-2005, 02:33 PM   #8
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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!
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Old 05-18-2005, 03:33 PM   #9
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glad you didn't have to walk or tow.
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Old 05-18-2005, 10:01 PM   #10
screwballl
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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...
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