Guys I'm experiencing a problem with the ignition module on my LT. I've replaced it two times within the past year with brand new GM modules and once again its going bad. My complete ignition system consist of a MSD pro billet opti, Crane hi-6 ignition box and Crane LX-92 coil which both are less than six months brand new. The car will diving along just fine then all of a sudden it falls on its face and won't start back up for some length of time. I'm at wits end here and I don't know what else to do. Any suggestions?

 

Have you done the mod where you space the module away from the head (or even relocate it off the head completely)? Electrical components aren't very fond of heat, and as we know the heads get a tad warm Though you shouldn't be experiencing failures that soon and this often, so either you got a bad module or something else is the cause. I'd be removing the coil and ignition box, putting it back to stock, and see how that does.

 

a bad coil can kill ICM's. I would replace both of them and go from there

 

Okay, I replaced the module again today and it started right up but I believe something else is causing them to go bad. I havent relocated the module because I am unaware that it could be done, anyone care to share the details?

 

http://shbox.com/1/4th_gen_tech2.html#ICM_cooling

 

I just took some nuts that were bigger than the new-longer bolts I got and used the nuts as the spacer instead of washers I wanted as little surface area to be contacting the head AND the ICM, so a nut was the best option for that.

 

I stuck a wood block behind my icm to use for a spacer because I didnt have any washers. It seemes to work fine.

 

And they call me a redneck lol I wouldn't use wood, tis a good insulator! You want the air flow behind it. Unless it's just a really small piece (size across of a penny, obviously thicker though) which only is there to tighten against.