Is the 02 sensor dead?

[I-luv-em-all]

I am having some mixed signals as far as the symtoms to my car i dont kow what it could be im thinkin 02 sensor. For one my A/F gauge is stuck in the max rich the only time it ever moves is when i turn off my car and i here the ECU click off them it scans all the way back the lean and shuts off, the power wire for the gauge is hooked up to a accessory wire on my cd player. Anyway my datalogger readings are as follows: 02-R - is jumpy all the time from like .03 to .08 at idle, the 02-F is at a constant 3.49, on the graph is a straight line all the time. FT02 is a constant up down, up down, all the way across the graph the same as the 02-R. sorry for the book but i dont want to spend money on a 02 sensor if thats not the problem, need some info, thanks.

 

[psychlow]

Unplug the sensor and relog. Make sure that the O2 value changes. As long as it reads .00 or close to, your sensor is gone. Otherwise, you may have a wiring or ECU issue.