I had one confirmed and but probably two bad front O2 sensors. I did finally get a code. Replaced them and the car ran like new. It had not run that well in a loooong time. That tells me the sensors were degraded for a long time before the code showed.Bullitt664 said:Huh... Yeah I would definately try restoring the ECM. I think your programmer should read trouble codes. Bad sensors should trip the Service engine light... Again, I would check for vacuum leak just in case.