Hey. Try disconnecting the exhaust b4 it gets to the cat. That way if it
is the cat, you can drive the truck to wherever you need to go.
will wrote:
>Okay. Let truck idle for about 3 minutes. Blipped
>throttle a bit. Same thing. Loud groan from intake
>area and tried to stall at about 1800-2000rpm. Same
>black sooty stuff shooting out tailpipe. Not as much
>this time, though. But I did notice that the volume of
>exhaust was very low at idle and not much better at
>higher rpm -- of course, I couldn't get rmp above
>1800-2000 without engine bucking, hesitating, then
>stalling.
>
>When I shutdown truck, I noticed both top heater hoses
>to block (not radiator) were very hot. And this after
>only 3 minute idle! Radiator hose cool. Radiator cool.
>Intake reasonably cool. But exhaust manifolds very
>hot, too hot to hold. Gauge in truck showing near low
>end. I waited a bit until stuff cooled down to touch.
>Then I felt cat. It was still hot to touch. But rest
>of exhaust -- manifolds, y-pipe, pipe in front and
>behind cat towards muffler were really cool.
>
>Is this normal? Should the cat be that hot while
>everything else touching it is super cool?
>
>I realize I'm going on with this thread. And I
>appreciate all who have contributed to the solution to
>this problem. I'm leaning towards blocked cat, but
>I've got to be reasonably sure. Tow to nearest town
>for repair is very expensive. And I just don't have
>the extra $$$ if I'm way off base.(BTW...I just cut
>off pigtail to 02 sensor. Seems to have no effect on
>my engine behavior at this point.)
>
>Thanks. Will
>
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>
This archive was generated by hypermail 2b29 : Fri Feb 06 2004 - 11:46:01 EST