Gary, I have installed a ground cable from the Catalytic Converter to a chassis
ground, otherwise, the OXS grounding depends on some rather rusty connections
along the exhaust system. I never thought about the possible problem with
anti-seize goop. I use a copper based anti seize compound called 'CopaSlip' so
it should a conductor - hopefully.

Two more ground cables that I have added are:
1) from the RHS head to a chassis ground because I didn't want to depend upon
the rubber head gasket to conduct electricity or worse still to conduct through
the anti-freeze.
2) from the AFM body to a chassis ground because the signals from the AFM are
minute and the AFM builds up static from the inflowing (dry) air and because the
AFM is coupled only by rubber and plastic. Could this be the cause of the
'Vanagon Sydrome?'
-Larry

Gary Stearns wrote:

> Do oxygen sensors require grounding through the exhaust system?  Could this
> be why exhaust work would mysteriously cure b&k?  Could the anti-seize goop
> I put on the threads (only on the threads, not on the sensor)  be isolating
> my sensor?  Just curious.
>
> Gary