May have solved both problems although more work likely needed.

Discovered a 1-2 inch crack in the air filter housing box, covered it with duct tape.

Jiggled the connecting wires to bank 2 O2 sensor (these were butt connections previously repaired from heat damage). Will check for continuity and suspect connection later.

First startup the Check engine light never reappeared. 70 miles today, nothing.

A little surprised that the air filter box might create a vacuum leak but maybe I guess?


Sent from my iPad using Tapatalk