Thanks to all respondents, I appreciate your feedback. She's back at the shop that "fixed" her the first time; as is proper protocol. In good conscience, I have to afford the shop the "opportunity" to do the right thing. Hopefully it was just mis-timed. Never thought about the catalytic...
Timing chain let go about a half mile from home; surprisingly enough, I made it home with vehicle barely running. Shut it off in the driveway and she wouldn't restart, understandably. Contacted a local engine shop and had it towed there. Of course there were "complications" upon restart at the...