One last question...
OK, Since I reset the check engine light yesterday (unplugged battery), light has still not come on, it's been 3 driving cycles. ANyway, I want to know if the 02 sensor is indeed good, but something else is triggering the 02 sensor or making a fult in the computer with o2 sensor. Could something be causeing the 02 sensor to register as bad? Or when the computer says 02 sensor is bad, it's bad, no questions... ?
2006 E350 w/ 155k miles (Daily Driver)
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)