katuah

Mike -
where did you see the recall? I definitely need to check on that. I
know the O2 sensor was already replaced once, but if it is a problem
part, maybe it got replaced with another problem part, since it was
done at the dealer. (heck, wonder if could get a refund...)

I've really been wondering if it wasn't some sort of air temp sensor,
isn't there one on the intake manifold? since it does seem to be a fuel
mix problem AND changes severity with air temperature.



Mike Romain wrote:
> The O2 sensor for the Renix system on the 88-91 XJ is under recall!
>
> If you haven't had the recall done it is a freebie still.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> JRK58@MSN.COM wrote:
> >
> > I had the same symptoms with my 90 XJ, it was the O2 sensor. I would
> > double check the connection, all connections for that matter as they
> > have always been a problem on XJ's.

Mike Romain

They found the recall after they failed me 3 times on emissions and I
had paid the extortion fee to get a conditional pass. The computer
refused the conditional because of the recall. LOL!

I gave them ---- for not checking that 'before' fixing 'ghosts' so they
gave me the 2 emissions retest costs back at least. With the new O2
sensor, it passed easily.

I have sense been told and it is posted somewhere about the recall.
It's in alldata and I have a link, but I am not a member so it denies
the connection. http://alldata.com/TSB/04/890417D4.html

Mike

katuah wrote:
>
> Mike -
> where did you see the recall? I definitely need to check on that. I
> know the O2 sensor was already replaced once, but if it is a problem
> part, maybe it got replaced with another problem part, since it was
> done at the dealer. (heck, wonder if could get a refund...)
>
> I've really been wondering if it wasn't some sort of air temp sensor,
> isn't there one on the intake manifold? since it does seem to be a fuel
> mix problem AND changes severity with air temperature.
>
> Mike Romain wrote:
> > The O2 sensor for the Renix system on the 88-91 XJ is under recall!
> >
> > If you haven't had the recall done it is a freebie still.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > JRK58@MSN.COM wrote:
> > >
> > > I had the same symptoms with my 90 XJ, it was the O2 sensor. I would
> > > double check the connection, all connections for that matter as they
> > > have always been a problem on XJ's.

Mike Romain

They found the recall after they failed me 3 times on emissions and I
had paid the extortion fee to get a conditional pass. The computer
refused the conditional because of the recall. LOL!

I gave them ---- for not checking that 'before' fixing 'ghosts' so they
gave me the 2 emissions retest costs back at least. With the new O2
sensor, it passed easily.

I have sense been told and it is posted somewhere about the recall.
It's in alldata and I have a link, but I am not a member so it denies
the connection. http://alldata.com/TSB/04/890417D4.html

Mike

katuah wrote:
>
> Mike -
> where did you see the recall? I definitely need to check on that. I
> know the O2 sensor was already replaced once, but if it is a problem
> part, maybe it got replaced with another problem part, since it was
> done at the dealer. (heck, wonder if could get a refund...)
>
> I've really been wondering if it wasn't some sort of air temp sensor,
> isn't there one on the intake manifold? since it does seem to be a fuel
> mix problem AND changes severity with air temperature.
>
> Mike Romain wrote:
> > The O2 sensor for the Renix system on the 88-91 XJ is under recall!
> >
> > If you haven't had the recall done it is a freebie still.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > JRK58@MSN.COM wrote:
> > >
> > > I had the same symptoms with my 90 XJ, it was the O2 sensor. I would
> > > double check the connection, all connections for that matter as they
> > > have always been a problem on XJ's.

Mike Romain

They found the recall after they failed me 3 times on emissions and I
had paid the extortion fee to get a conditional pass. The computer
refused the conditional because of the recall. LOL!

I gave them ---- for not checking that 'before' fixing 'ghosts' so they
gave me the 2 emissions retest costs back at least. With the new O2
sensor, it passed easily.

I have sense been told and it is posted somewhere about the recall.
It's in alldata and I have a link, but I am not a member so it denies
the connection. http://alldata.com/TSB/04/890417D4.html

Mike

katuah wrote:
>
> Mike -
> where did you see the recall? I definitely need to check on that. I
> know the O2 sensor was already replaced once, but if it is a problem
> part, maybe it got replaced with another problem part, since it was
> done at the dealer. (heck, wonder if could get a refund...)
>
> I've really been wondering if it wasn't some sort of air temp sensor,
> isn't there one on the intake manifold? since it does seem to be a fuel
> mix problem AND changes severity with air temperature.
>
> Mike Romain wrote:
> > The O2 sensor for the Renix system on the 88-91 XJ is under recall!
> >
> > If you haven't had the recall done it is a freebie still.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > JRK58@MSN.COM wrote:
> > >
> > > I had the same symptoms with my 90 XJ, it was the O2 sensor. I would
> > > double check the connection, all connections for that matter as they
> > > have always been a problem on XJ's.

Mike Romain

They found the recall after they failed me 3 times on emissions and I
had paid the extortion fee to get a conditional pass. The computer
refused the conditional because of the recall. LOL!

I gave them ---- for not checking that 'before' fixing 'ghosts' so they
gave me the 2 emissions retest costs back at least. With the new O2
sensor, it passed easily.

I have sense been told and it is posted somewhere about the recall.
It's in alldata and I have a link, but I am not a member so it denies
the connection. http://alldata.com/TSB/04/890417D4.html

Mike

katuah wrote:
>
> Mike -
> where did you see the recall? I definitely need to check on that. I
> know the O2 sensor was already replaced once, but if it is a problem
> part, maybe it got replaced with another problem part, since it was
> done at the dealer. (heck, wonder if could get a refund...)
>
> I've really been wondering if it wasn't some sort of air temp sensor,
> isn't there one on the intake manifold? since it does seem to be a fuel
> mix problem AND changes severity with air temperature.
>
> Mike Romain wrote:
> > The O2 sensor for the Renix system on the 88-91 XJ is under recall!
> >
> > If you haven't had the recall done it is a freebie still.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > JRK58@MSN.COM wrote:
> > >
> > > I had the same symptoms with my 90 XJ, it was the O2 sensor. I would
> > > double check the connection, all connections for that matter as they
> > > have always been a problem on XJ's.

philthy

fuel pump and clogged/ broke cat.cvonverter come to mind first and both
will not set any codes

katuah wrote:

> Hey Bill;
>
> I have to ask, what is the defining thing to make you believe it is the
> springs? I ask because I had thought that weak springs would cause
> "clacking" if they weren't doing their job, sort of like a
> redlined/overrotated engine, only starting at lower RPM's, but this
> problem appears primarily at only around 2000 RPM (which seems really
> low), and actually seems to lessen at higer RPM's (22-2500).
>
> Is there a way to know besides the coded diagnostic, because the
> computer tester at the dealership showed nothing of the sort -
> actually, showed nothing at all, per the mechanics there.

philthy

fuel pump and clogged/ broke cat.cvonverter come to mind first and both
will not set any codes

katuah wrote:

> Hey Bill;
>
> I have to ask, what is the defining thing to make you believe it is the
> springs? I ask because I had thought that weak springs would cause
> "clacking" if they weren't doing their job, sort of like a
> redlined/overrotated engine, only starting at lower RPM's, but this
> problem appears primarily at only around 2000 RPM (which seems really
> low), and actually seems to lessen at higer RPM's (22-2500).
>
> Is there a way to know besides the coded diagnostic, because the
> computer tester at the dealership showed nothing of the sort -
> actually, showed nothing at all, per the mechanics there.

philthy

fuel pump and clogged/ broke cat.cvonverter come to mind first and both
will not set any codes

katuah wrote:

> Hey Bill;
>
> I have to ask, what is the defining thing to make you believe it is the
> springs? I ask because I had thought that weak springs would cause
> "clacking" if they weren't doing their job, sort of like a
> redlined/overrotated engine, only starting at lower RPM's, but this
> problem appears primarily at only around 2000 RPM (which seems really
> low), and actually seems to lessen at higer RPM's (22-2500).
>
> Is there a way to know besides the coded diagnostic, because the
> computer tester at the dealership showed nothing of the sort -
> actually, showed nothing at all, per the mechanics there.

philthy

fuel pump and clogged/ broke cat.cvonverter come to mind first and both
will not set any codes

katuah wrote:

> Hey Bill;
>
> I have to ask, what is the defining thing to make you believe it is the
> springs? I ask because I had thought that weak springs would cause
> "clacking" if they weren't doing their job, sort of like a
> redlined/overrotated engine, only starting at lower RPM's, but this
> problem appears primarily at only around 2000 RPM (which seems really
> low), and actually seems to lessen at higer RPM's (22-2500).
>
> Is there a way to know besides the coded diagnostic, because the
> computer tester at the dealership showed nothing of the sort -
> actually, showed nothing at all, per the mechanics there.

Simon Juncal

Cal wrote:
> I know the best way to get by this is to replace the spings. What I have
> done is to use Seafoam. I pour about half a can slowly in the throttle body
> at idle (or a little above idle), add the rest to the gas, and I am 'cured'
> for about a year. ( Follow instructions on the can.) I tried the new plugs
> and wires suggested by the dealership, and this is the only thing that has
> worked for me. Of course, if you have the cash or time, replace the
> springs. Especially since with this cheap fix , you're never really sure
> about that trip to the mountains......

How does seafoam in the FUEL SYSTEM cure weak valve springs for a
year??? You've got worn valve guides that are cruding up your valves and
restricting flow maybe... or perhaps you've got really really bad carbon
buildup that's causing ping (which will definitely be folowed by some
power loss), hell maybe you've got carbon so bad that it's shrouding
your valves and reducing flow... In which case some hard wide open
throttle runs every once in a blue moon should help. but nothing in your
fuel, intake, or combustion chamber is ever EVER touching your springs
or effecting them in any other way.

--
Simon
"I may be wrong, but I'm not uncertain." -- Robert A. Heinlein