Tune up questions

junkyardhero said

agreed that it could easily be a battle on a few different fronts.

my *guess* is something electrical heating up and breaking down or breaking contact. but it could also be a little of column A, something from column B and a little of column C thrown in for good measure.

death by 1000 cuts is always the most fun to diagnose and fix!

Click to expand...

Yeah nothing like simultaneous issues. Orange box and coil are pretty easy to check separately though. I gave up on the Mopar electronic ignition entirely, just because of those ignition boxes. I bought several before I got one that was ok above 4,000 RPM, and even that one would throw in a few misses over 5k but that was workable on the street.

The fact that it idles great before it heats up pretty much eliminates a mechanical timing problem, so I would 100% start with swapping the box and coil. At least those are pretty plug and play.