Possible MSD 6AL failure

All great input, keep it coming. Awesome referral on Techwest, I'll try their test as well.

http://techwest.ipower.com/page2.html

I like the idea of Techwest looking at it, I suppose MSD can 'fix' it, but if someone knows how to make it bulletproof, even better. I've considered replacing it but the more I dig, the more I hear about 'issues', granted many others have no issues.

I opened a can of worms, you guys all gave me homework this week after work. ;)

I doubt it's the kill switch, I installed it this weekend but the 1st issue happened before it was even installed. BUT, I'm not discounting anything at this point.

As far as the distributor, I don't recall what it is, I'll have to check later.

Yeah, it's intermittent, so it's hard to narrow down. I wonder if if the car's running fine if I'll even see the issue on the 6AL or coil at all.

I'll clarify my prev statement. When turning the ignition on, the engine will turn over but it doesn't start at all. Last night I got 'lucky' that it finally did start, but I'm not relying on that anymore.

My mech gave me one of his old 6400's and I'll also try to swap that in so I can have a running car. While the 6420 is out, I'm going to open it up and see if there's any cold solder joints or blown transistors. I'm a EE, I can look at it from that standpoint and see if anything's obvious. I really hate the idea of just swapping 6ALs, just waiting for another to die an just replace. At that point, I'd rather have a more reliable solution.

BTW, I've also confirmed that my 6AL is not one of the counterfeits.