I have taken it to a friend and his snap on Modis showed nothing stored or pending. I'm thinking that the computer may need to be reflashed (or it's a bad PCM?), from what she describes it only acts up in open loop.

Maybe something in it's preset parameters is amiss and it does not compensate for something. The PCM should flag any reading out of spec from any component. I was hoping that this might be common enough that others here could help direct me. Thanks