Travelaire, did you get that first faulty part aftermarket or OEM? I ask this because your dilemma brings to mind my hard won wisdom that taught me to source engine control electrical items as well as secondary ignition components from the OEM parts channel. I especially stress this on EEC sensor items. I think most of my grey hair is due to aftermarket O2 and temp input sensors that either don't work at all or introduce a whole different set of problems. Make that some of my grey hair. The kids are responsible for most of it.