Hey all,

Tried to get my O2 sensor out this weekend but due to extreme corrosion & an awkward angle (couldn't really see what was going on), I unfortunately ended up striping the hex nut portion of the sensor. Its been soaked in PB Blaster and I even tried a bit with a pipe wrench but not enough room to get a proper grip. I even bought the damn O2 sensor special side cut socket to do this sucker but it was what slipped and caused the problem.

Any suggestions? I'd really prefer not to have to take the manifold off!!!

Thanks in advance,
cton.
Toronto, ON

88 240 DL Sedan 191,XXX km's

Begin with a cold manifold, start the car and warm up the manifold for 45 seconds to 1 1/2 minutes depending on ambient air temp. (this expands the threaded hole slightly). Then have at the sensor. Good luck.
--
'83 245 M46, '86 245 auto

My short tempered solution would be to use one of those plyers that lock on by way of the handle. Pull out a heavy hammer and go at it. Once destroyed and still not coming off I'd replace the manifold. That would be my way of doing it. That way you can clean the rust and paint it. Its only 8 bolts and some seals? I've never actually taken one off.