[Modemagic]

On a B13 ('92) if you unplug the O2 sensor while the motor is running... will that trip a check engine light or cause the car to change idle or any other effects??

 

[Modemagic]

Already tried the 'unplug and see' trick. I suspect my o2 sensor is trashed, but the ecu throws no codes, even if I unplug it. I think my car does run rich, I smell an abundance of fuel while it runs in the motor area. It never tripped the CE light, so I dunno if its supposed to and didn't, making me wonder if my ECU is jackked or what.