Removing Front O2 Sensor

[Canadian Expy]

So I replaced the back 2 no major problems , now the front 2 look like a PIA the driver side seems to lossen and then tighten right back up? The Passenger side I'm not sure how you even get at that one?( do you have to drop the exhaust?) Any one pulled the front O2 off a 5.4

 

[khpony]

I had the same issue. My mechanis charged me $79 labor to replace it. I figured it was money well spent since they've been known to break off.

 

[1997SCEBFEX]

Didn't have to drop the exhaust, but was able to get just got enough of the wrench on it to break it loose, then many repetitive tiny little turns to get it out. Big hands not desirable. Driver's side much easier, but cut the wires first. Good luck.

 

[Canadian Expy]

I didn't even think a wrench would fit in the passenger side. AS for the driver it turned one full turn then stopped and wouldn't move. weird ???

 

[walnuts4x4]

could it be threads are gummed up? maybe tighten then loosen and repeat...lol work it loose??? i don't know is a weird problem