I found some milky white stuff dripping from my tailpipe after my 90GL sat
overnight at a friends house 3 hours away.  He had read an article saying
that was a dead gievaway that the cat is close to toast.  We barely got
back home as the engine would run fine at higher rpms, but not idle well
and the closer ww got to home, the worse it ran at low rpms.  The last two
stop lights were killers!!.  Gutted it and haven't gotten good mileage since.

As a side note, does the O2 sensor need to have that 900 degree environment
to function properly?

DM&FS

At 09:32 PM 7/12/2004, Shawn Luft wrote:
>Hello
>
>I suspect my catalytic converter is blocked up because of the following
>symptoms :
>
>(1) the van recently blew a hole through the "j" elbow pipe just prior to
>the catalytic converter
>
>(2) something is making a rattling noise inside the catalytic converter
>
>(3) i replaced elbow pipe but seem to have air escaping between the gasket
>of the catalytic converter and the new pipe.
>
>(4) van works ok but since replacing the elbow pipe the van seems to have
>a 20% loss in power.
>
>
>Is it possible the cat is clogged, and caused the elbow pipe to blow a
>hole (for air to escape) ??
>
>Is it possible that the new pipe has no hole, so pressure is collecting
>again inside a bad cat and causing the loss of power?
>
>We are leaving for holidays on Friday and I want to everything as great as
>possible.
>
>Any comments are much appreciated.
>
>Thx
>Shawn