wjbertrand
Ventura Highway
I was beginning to suspect a mechanical problem again. Too much play in the right bank cam chain? Loose bearing fit for the right intake cam (which carries the cam position sensor wheel) letting it move about? I could not detect any problem with my inspections, but signals out of sync from the cam vs. the crank position sensors could possibly confuse the ECM?? Dunno, gotta stop thinking about it...