Similar problem re: check engine light. Car runs beautifully, spankin' V8 all over the place, but I'm told I've a faulty O2 sensor and some bad plug wires???? That's what the DTC codes were, anyhow. I'm confused. BTW, my noise WAS a faulty bearing, $82 for parts, $167 for labor. WTF?!?!?!?!?!? Dave Bergesen djbergesen@dotstar.net