You already destroyed it with the PB blaster. Get a new one. To replace a
cat without having a new or at least known good sensor is a waste. Cats
usually go badly because something else is wrong and the O2 sensor not
working will kill it in short order.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
mordo
Sent: Sunday, November 11, 2007 3:51 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Stubborn oxygen sensor

I'm replacing the catalytic converter on my Carat and not suprisingly, the
02 sensor is thoroughly stuck with corrosion. Generous application of PB
blaster is ineffective. Would applying torch heat risk damage to the
sensor?
It seems obvious that it is made for high temps but as high as a torch?

cheers,

--
mordo
1990 Carat