Leaderboard

Solution for me. Installed new premium AC Delco wires, put heat shields back on, no misses yet. Still running with disconnected solenoid. But I can accelerate again!

Get a scanner that will read misfire counters and narrowing down which cyl or cylinders that are misfiring would be easy. There are tools that will read this in the $50 range for what it's worth(possibly some cheaper than that).

This started when I'd recently had the problem of my driver's side door not opening again. Been through this so many times I've lost count, but it had started lasting less and less. I ordered a Dorman replacement from Amazon, hopefully thinking it would be the best of the worst. It lasted less than a month. I'd had to set it at the limit of the adjustment right from the start, which wasn't a good sign. Sure, it worked at first. But it started getting harder and harder to open with seemingly every pull. Within a few weeks it didn't open the door anymore either. Looking more

I don't mean misfire codes, I mean "misfire counters." Codes do not get thrown until so many misfire counts occur. Having the ability to see the counters means you can see a cylinder misfiring before a code sets.

No black marks but I will invest in new wires this weekend.

Chances are this 1990 Firebird I acquired last year will need it as well, sat for nearly 30 years because of that. I might grab one of those instead, thanks for that link.

If you fixed a random misfire by removing the heat shields, you have bad plug wires. They are arcing to the ground the heat shield provides. 40KV will arc easily

Thru all my sources, I think I've bought the last one. Well, the last one listed in the parts database.