wrote in news:42E2A095.17EF9769@comcast.net:
> just returned from a 500 mile round trip down and back in one day to
> south florida....on the trip back my pristine 96 850 with just over
> 107,000miles on the odometer seemed to develop a severe case of not able
> to go over 70 mph on the interstate...if i pushed furthur down on the
> accellerator, all it did was drop down a gear or two,make more noise and
> take a long time to increase speed,maybe 5 mph...i am suspecting the
> converter is partially blocking the exhaust...i noticed a slight
> increase in temp reading on the gauge which seemed to be in sync with
> the increased engine rpms...very hot today here in florida mid to upper
> 90's....wondering what the options suggested are for getting this back
> on the beam....car is like new in all other respects....just doesn't
> want to rev much over the 3000rpms easily.... also, cost is a
> consideration...what happens ,not that i would do this, but what if a
> "test" pipe was installed in place of the cat? are there generic cats
> that fit right in? what is expected cost from a dealer?
> looking for helpful suggestions here.....thanks in advance....if you
> need additional info, drop me a line!
On my 98 s70, which sure looks to be very "similar", I will be doing a cat
soon. I have researched an aftermarket as the original part price is close
to a $1000, part only, and no o2 sensors which may or may not be needed.
If you need one, there seem to be at least 3 choices. All the ones I
have found any info on are made with steel that has an aluminum finish,
then welded. Welding removes the aluminum finish, makes me wonder why they
bother. Depending where you live, I would expect a life of 3-6 years, it is
just a guess. Costs about 300-400 dollars for the part. As I say, I have
not done it yet. Metal thinkness seems to vary from 0.075" to 0.060"
depending on the manufacturer. I have decided to get the one made by D.E.C.
in California (D.E.C., 15125 Califa St. Unit C, Van Nuys, CA 91411 (818)
994-1908 ) I have no relationship with d.e.c. I just expect that their
product will fit properly, and work properly, and have been told they use
the thicker steel. I will be replacing mine for rust through reasons, so I
prefer the thicker steel.
Some people claim that the aftermarket cats can cause problems with codes,
I assume from o2 sensors. The folks at d.e.c. claim to have the o2 sensor
depth in the gas stream at the same depth, and also the same locations as
Make sure you need a cat before you get one. If yours shows any signs of
porisity or flacking (or holes) where the welds are that hold the internal
structure to the exterior structure you will need one soon, If you have
holes you should have codes that would point to the o2 sensors, which may
not be the problem at all. With holes you should address the situation
The other option is to get a used original part from a yard. I chose not to
go this way as the yards that have them want almost what a new aftermarket