Well that sounds lovely. ;o) I don't have a torch, so I think one more go at them this weekend and then I'll take over to the mechanic.

BTW, I listened for vacuum leaks again today, no hissing anywhere that I can hear. I checked every hose and connection I could get my hands on and didn't find anything loose or split.

I'm wondering if I checked the wrong fuses though. There isn't anything in the book that specifically says which fuses are for the O2's, just "engine management".

 

Well, you could just make sure you have 12 volts on one of the heater wires. You may have voltage on both, if it has a bias voltage on the other one. Either way, I think with the key on, you should have battery voltage on at least one heater wire.
Don't worry too much about the o2's. They always come out. One way or another!

 

Closing the loop on this one, the front two O2 sensors fixed the SES light.

 

But how did you get them out? Did you do it yourself or did you end up using a mechanic?

I guess I've been lucky; I've probably replaced a half dozen of them and they've always unscrewed with no trouble. I have more trouble with the connectors than with the O2s themselves.

 

I used my mechanic since I didn't have a torch. Took him two hours and he's a pro so there was no way I was getting those out. He actually had to cut the left one out and weld a new bung on.

 

I know the feeling