The root cause of the failure is the fact that the engine is running too
rich, and I absolutely suspect that the exhaust leak before the O2 sensor is
the fault. Make that leak go away. Don't replace the catalytic converter.
Although a fresh one will, in fact, clean up the exhaust, it won't survive
to next year's inspection, as the rich mixture will destroy it. Fix the
root cause, not the symptom.

Jerry


"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:3FE92A40.5A6F3967@***.net...
> Hi Nick,
> Your mechanic will tell which is misfiring by a balance test using
> their diagnostic computer, which short each plug individually, measuring
> the change in revolutions per minute. You may do the same by pulling an
> ignition wire, until you fine the one that doesn't change the RPM.
> I'd fix the exhaust, letting oxygen in is bound to screw up your
> Oxygen Sensor, probably enriching the mixer to compensate, further
> screwing up your tests. And replace your catalytic convert which will
> burn the Hydrocarbons and change Carbon Monoxide into harmless Carbon
> Dioxide.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Nick N wrote:
> >
> > OHya forgot. It's stumbling badly on idle. Missfiring. Is there anyway
to
> > tell which one is missfiring? It's the 4cyl.
> > Nick
> >
> > "Nick N" <nnote@despammed.com> wrote in message
> > news:gg9Gb.22046$J77.7584@fed1read07...
> > > Ok my 93yj failed emissions miserably today. Hydrocarbons by just a
little
> > > but CO by well, a HUGE amount. Nox was barely noticable... I did the
> > whole
> > > tuneup about 4 weeks ago but also had a gap develop between the header
and
> > > pipe (before the o2 sensor). The tuneup got rid of my backfire
problem
> > but
> > > the exhuast problem is making my Jeep sound horrible. I think it's
also
> > > causing my Jeep to run real rich (stinks) and it has a noticible lack
of
> > > power. Any screwed up logic here? Anyone have anymore suggestions on
> > > solving this? I'm thinking about just having my exhaust rebuilt from
the
> > > header back, but I don't know if that will solve my emissions prob.
> > > Nick
> > >
> > >
> > > --
> > > Nick
> > > http://members.***.net/nnote/
> > >
> > >

 

The root cause of the failure is the fact that the engine is running too
rich, and I absolutely suspect that the exhaust leak before the O2 sensor is
the fault. Make that leak go away. Don't replace the catalytic converter.
Although a fresh one will, in fact, clean up the exhaust, it won't survive
to next year's inspection, as the rich mixture will destroy it. Fix the
root cause, not the symptom.

Jerry


"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:3FE92A40.5A6F3967@***.net...
> Hi Nick,
> Your mechanic will tell which is misfiring by a balance test using
> their diagnostic computer, which short each plug individually, measuring
> the change in revolutions per minute. You may do the same by pulling an
> ignition wire, until you fine the one that doesn't change the RPM.
> I'd fix the exhaust, letting oxygen in is bound to screw up your
> Oxygen Sensor, probably enriching the mixer to compensate, further
> screwing up your tests. And replace your catalytic convert which will
> burn the Hydrocarbons and change Carbon Monoxide into harmless Carbon
> Dioxide.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Nick N wrote:
> >
> > OHya forgot. It's stumbling badly on idle. Missfiring. Is there anyway
to
> > tell which one is missfiring? It's the 4cyl.
> > Nick
> >
> > "Nick N" <nnote@despammed.com> wrote in message
> > news:gg9Gb.22046$J77.7584@fed1read07...
> > > Ok my 93yj failed emissions miserably today. Hydrocarbons by just a
little
> > > but CO by well, a HUGE amount. Nox was barely noticable... I did the
> > whole
> > > tuneup about 4 weeks ago but also had a gap develop between the header
and
> > > pipe (before the o2 sensor). The tuneup got rid of my backfire
problem
> > but
> > > the exhuast problem is making my Jeep sound horrible. I think it's
also
> > > causing my Jeep to run real rich (stinks) and it has a noticible lack
of
> > > power. Any screwed up logic here? Anyone have anymore suggestions on
> > > solving this? I'm thinking about just having my exhaust rebuilt from
the
> > > header back, but I don't know if that will solve my emissions prob.
> > > Nick
> > >
> > >
> > > --
> > > Nick
> > > http://members.***.net/nnote/
> > >
> > >

 

The root cause of the failure is the fact that the engine is running too
rich, and I absolutely suspect that the exhaust leak before the O2 sensor is
the fault. Make that leak go away. Don't replace the catalytic converter.
Although a fresh one will, in fact, clean up the exhaust, it won't survive
to next year's inspection, as the rich mixture will destroy it. Fix the
root cause, not the symptom.

Jerry


"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:3FE92A40.5A6F3967@***.net...
> Hi Nick,
> Your mechanic will tell which is misfiring by a balance test using
> their diagnostic computer, which short each plug individually, measuring
> the change in revolutions per minute. You may do the same by pulling an
> ignition wire, until you fine the one that doesn't change the RPM.
> I'd fix the exhaust, letting oxygen in is bound to screw up your
> Oxygen Sensor, probably enriching the mixer to compensate, further
> screwing up your tests. And replace your catalytic convert which will
> burn the Hydrocarbons and change Carbon Monoxide into harmless Carbon
> Dioxide.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Nick N wrote:
> >
> > OHya forgot. It's stumbling badly on idle. Missfiring. Is there anyway
to
> > tell which one is missfiring? It's the 4cyl.
> > Nick
> >
> > "Nick N" <nnote@despammed.com> wrote in message
> > news:gg9Gb.22046$J77.7584@fed1read07...
> > > Ok my 93yj failed emissions miserably today. Hydrocarbons by just a
little
> > > but CO by well, a HUGE amount. Nox was barely noticable... I did the
> > whole
> > > tuneup about 4 weeks ago but also had a gap develop between the header
and
> > > pipe (before the o2 sensor). The tuneup got rid of my backfire
problem
> > but
> > > the exhuast problem is making my Jeep sound horrible. I think it's
also
> > > causing my Jeep to run real rich (stinks) and it has a noticible lack
of
> > > power. Any screwed up logic here? Anyone have anymore suggestions on
> > > solving this? I'm thinking about just having my exhaust rebuilt from
the
> > > header back, but I don't know if that will solve my emissions prob.
> > > Nick
> > >
> > >
> > > --
> > > Nick
> > > http://members.***.net/nnote/
> > >
> > >

 

I think I'm with ya. Thanks Jerry.
Nick

"Jerry Newton" <figatmcttelecom.com> wrote in message
news:3fe9cdec_3@newspeer2.tds.net...
> The root cause of the failure is the fact that the engine is running too
> rich, and I absolutely suspect that the exhaust leak before the O2 sensor
is
> the fault. Make that leak go away. Don't replace the catalytic
converter.
> Although a fresh one will, in fact, clean up the exhaust, it won't survive
> to next year's inspection, as the rich mixture will destroy it. Fix the
> root cause, not the symptom.
>
> Jerry
>
>
> "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> news:3FE92A40.5A6F3967@***.net...
> > Hi Nick,
> > Your mechanic will tell which is misfiring by a balance test using
> > their diagnostic computer, which short each plug individually, measuring
> > the change in revolutions per minute. You may do the same by pulling an
> > ignition wire, until you fine the one that doesn't change the RPM.
> > I'd fix the exhaust, letting oxygen in is bound to screw up your
> > Oxygen Sensor, probably enriching the mixer to compensate, further
> > screwing up your tests. And replace your catalytic convert which will
> > burn the Hydrocarbons and change Carbon Monoxide into harmless Carbon
> > Dioxide.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Nick N wrote:
> > >
> > > OHya forgot. It's stumbling badly on idle. Missfiring. Is there
anyway
> to
> > > tell which one is missfiring? It's the 4cyl.
> > > Nick
> > >
> > > "Nick N" <nnote@despammed.com> wrote in message
> > > news:gg9Gb.22046$J77.7584@fed1read07...
> > > > Ok my 93yj failed emissions miserably today. Hydrocarbons by just a
> little
> > > > but CO by well, a HUGE amount. Nox was barely noticable... I did
the
> > > whole
> > > > tuneup about 4 weeks ago but also had a gap develop between the
header
> and
> > > > pipe (before the o2 sensor). The tuneup got rid of my backfire
> problem
> > > but
> > > > the exhuast problem is making my Jeep sound horrible. I think it's
> also
> > > > causing my Jeep to run real rich (stinks) and it has a noticible
lack
> of
> > > > power. Any screwed up logic here? Anyone have anymore suggestions
on
> > > > solving this? I'm thinking about just having my exhaust rebuilt
from
> the
> > > > header back, but I don't know if that will solve my emissions prob.
> > > > Nick
> > > >
> > > >
> > > > --
> > > > Nick
> > > > http://members.***.net/nnote/
> > > >
> > > >
>
>

 

I think I'm with ya. Thanks Jerry.
Nick

"Jerry Newton" <figatmcttelecom.com> wrote in message
news:3fe9cdec_3@newspeer2.tds.net...
> The root cause of the failure is the fact that the engine is running too
> rich, and I absolutely suspect that the exhaust leak before the O2 sensor
is
> the fault. Make that leak go away. Don't replace the catalytic
converter.
> Although a fresh one will, in fact, clean up the exhaust, it won't survive
> to next year's inspection, as the rich mixture will destroy it. Fix the
> root cause, not the symptom.
>
> Jerry
>
>
> "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> news:3FE92A40.5A6F3967@***.net...
> > Hi Nick,
> > Your mechanic will tell which is misfiring by a balance test using
> > their diagnostic computer, which short each plug individually, measuring
> > the change in revolutions per minute. You may do the same by pulling an
> > ignition wire, until you fine the one that doesn't change the RPM.
> > I'd fix the exhaust, letting oxygen in is bound to screw up your
> > Oxygen Sensor, probably enriching the mixer to compensate, further
> > screwing up your tests. And replace your catalytic convert which will
> > burn the Hydrocarbons and change Carbon Monoxide into harmless Carbon
> > Dioxide.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Nick N wrote:
> > >
> > > OHya forgot. It's stumbling badly on idle. Missfiring. Is there
anyway
> to
> > > tell which one is missfiring? It's the 4cyl.
> > > Nick
> > >
> > > "Nick N" <nnote@despammed.com> wrote in message
> > > news:gg9Gb.22046$J77.7584@fed1read07...
> > > > Ok my 93yj failed emissions miserably today. Hydrocarbons by just a
> little
> > > > but CO by well, a HUGE amount. Nox was barely noticable... I did
the
> > > whole
> > > > tuneup about 4 weeks ago but also had a gap develop between the
header
> and
> > > > pipe (before the o2 sensor). The tuneup got rid of my backfire
> problem
> > > but
> > > > the exhuast problem is making my Jeep sound horrible. I think it's
> also
> > > > causing my Jeep to run real rich (stinks) and it has a noticible
lack
> of
> > > > power. Any screwed up logic here? Anyone have anymore suggestions
on
> > > > solving this? I'm thinking about just having my exhaust rebuilt
from
> the
> > > > header back, but I don't know if that will solve my emissions prob.
> > > > Nick
> > > >
> > > >
> > > > --
> > > > Nick
> > > > http://members.***.net/nnote/
> > > >
> > > >
>
>

 

I think I'm with ya. Thanks Jerry.
Nick

"Jerry Newton" <figatmcttelecom.com> wrote in message
news:3fe9cdec_3@newspeer2.tds.net...
> The root cause of the failure is the fact that the engine is running too
> rich, and I absolutely suspect that the exhaust leak before the O2 sensor
is
> the fault. Make that leak go away. Don't replace the catalytic
converter.
> Although a fresh one will, in fact, clean up the exhaust, it won't survive
> to next year's inspection, as the rich mixture will destroy it. Fix the
> root cause, not the symptom.
>
> Jerry
>
>
> "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> news:3FE92A40.5A6F3967@***.net...
> > Hi Nick,
> > Your mechanic will tell which is misfiring by a balance test using
> > their diagnostic computer, which short each plug individually, measuring
> > the change in revolutions per minute. You may do the same by pulling an
> > ignition wire, until you fine the one that doesn't change the RPM.
> > I'd fix the exhaust, letting oxygen in is bound to screw up your
> > Oxygen Sensor, probably enriching the mixer to compensate, further
> > screwing up your tests. And replace your catalytic convert which will
> > burn the Hydrocarbons and change Carbon Monoxide into harmless Carbon
> > Dioxide.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Nick N wrote:
> > >
> > > OHya forgot. It's stumbling badly on idle. Missfiring. Is there
anyway
> to
> > > tell which one is missfiring? It's the 4cyl.
> > > Nick
> > >
> > > "Nick N" <nnote@despammed.com> wrote in message
> > > news:gg9Gb.22046$J77.7584@fed1read07...
> > > > Ok my 93yj failed emissions miserably today. Hydrocarbons by just a
> little
> > > > but CO by well, a HUGE amount. Nox was barely noticable... I did
the
> > > whole
> > > > tuneup about 4 weeks ago but also had a gap develop between the
header
> and
> > > > pipe (before the o2 sensor). The tuneup got rid of my backfire
> problem
> > > but
> > > > the exhuast problem is making my Jeep sound horrible. I think it's
> also
> > > > causing my Jeep to run real rich (stinks) and it has a noticible
lack
> of
> > > > power. Any screwed up logic here? Anyone have anymore suggestions
on
> > > > solving this? I'm thinking about just having my exhaust rebuilt
from
> the
> > > > header back, but I don't know if that will solve my emissions prob.
> > > > Nick
> > > >
> > > >
> > > > --
> > > > Nick
> > > > http://members.***.net/nnote/
> > > >
> > > >
>
>