Front and Rear 02 Sensors OBD1

[Roybatty]

you trying with an open end wrench? since you are getting rid of them cut off the connector if you cant fit the wrench over it, and use the closed end. Otherwise try and pick up an 02 sensor socket form a parts store, they work well for breaking them loose.

I purchased a long 7/8" combination open/closed end wrench from sears (craftsmen). I may have broke it by adding a large adjustable wrench to the closed end. I also cut the wires, spinning it was a pain with the plug on it. Was still a pain as its tight, but DOABLE. I also picked up O2 sensor socket from Harbor Freight for under 5 bucks, nice for the rear bank o2.

Got replacement OEM from RockAuto, but Mean Green's solution is much better $$$$