[Blackbirdws6]

An update and a bit more mystery to this knock sensor issue.

- Codes cleared a couple days ago, car not driven until yesterday.

- Start up, give it 30 secs or so to warm a little. Took it out for an easy drive.

- Very light throttle, soft upshifts etc as everything gets up to temperature. No knock retard shown on scanner.

- Take it on the highway, fully warmed up. No knock retard (KR) with any throttle - 0-70%. Played with it in different gears and rpms, no knock retard. It would have typically showed KR in these situations given my view of the scanner on prior drives.

- Almost home now after probably 20+ miles with no KR showing at any point. I goose it a bit in 1st and part of 2nd. Now I am seeing knock retard of 3.9 degrees pop up with any moderate throttle. Doesn't trigger it at light throttle or idle. No CEL popped up just yet but I know it will eventually.

So my quick take is something is getting unhappy or triggering KR after I decide to get saucy and from then on out, it registers KR at any moderate part throttle.