I knew I should have changed the spark plugs back a few weeks ago. Didn't think plugs that had less than 5000 miles could be the culprit.
Ford pulled the plugs, the last thing they did after looking at everything else. STUPID E-3's, never ever use them, they suck azz. Porcelain was cracked on all six of them, so the spark to the plugs was hit-and-miss. And obviously, in a humid environment as I live in, that could cause problems.
They put new plugs in her, and she fires right up every time. They are going to keep her overnight and see what happens in the am. But on their diagnostic equipment, there is nothing wrong. All monitors are good, no default codes for anything.
Back in 2009 when I had similar problems, new plugs did not fix the issue. Nor did coils and wires. Or any of the sensors I changed (all of them).
This time it was spark plugs. Live and learn. 55 years old and never had plugs go bad on me like these did. Yes the truck ate some iridium plugs in 2009. But I was told those iridiums I put in were El Cheapo Exploding Cigar plugs.
We'll see what happens tomorrow. I'll be glad to have her back. Clean up my Lightning and stick her back in the garage with a cover.