This one is the 96, I did a head gasket and got it running. It's got to be mechanical. Head is coming off tomorrow to look again, if I can't find anything the motor will probably come out and be gone through.
I did check the resistance. It's the front one that sends the signal to the ecm. Something isn't right though, #1 Cylinder is detonating, #2, 3, 4, 5 are all lean, and #6 is rich.