Posted 01 February 2005 - 11:15 AM
needed cleaning cleaned. But the fumes from the exhaust was pretty hot.
Hotter than normal.
The mechanic told me that the exhaust is dirty and possibly jammed that's
why. And that I need to tekan more to clear it. True?
Posted 01 February 2005 - 05:03 PM
hmmm...interesting observation. i noticed that whenever i load things in
the boot, the heat from the exhaust goes up to the extent of "ouch, so
hot!!" when the engine is running. i've never encountered this from my
previous cars like fiat, satria GTi or even mom's cherokee.
Posted 01 February 2005 - 05:35 PM
get & hotter still!! If you have a catalytic converter in your exhaust
system, it can get hotter (more than 400 degrees C). So, is it any wonder
that the exhaust feels hot?
Posted 01 February 2005 - 08:29 PM
Took my car to exhaust shop to check. The catalytic convertor was stuck and
filled with black habuk. So chopped it off and replaced it. Drives much
better now. It was so sluggish then but smoother now.
Posted 01 February 2005 - 11:09 PM
it was the same between his and mine.
Did the lambda lamp come on when you full press the throttle ? I really
feel like removing my cat too but my mechanic advise against it. Somtimes
exhaust gases are also hot because the engine is running too lean and if
your engine block has been skimmed, this could result in higher
compression and thus hotter engine temperature.
Posted 01 February 2005 - 11:34 PM
WHy did he advised against it? According to the manual, it's just a
supplementary part. Not a major one. The reason I had it removed was
because my car fuel consumption went on the high side and the mechanics
mentioned that the fume coming out is too hot compared to the other Volvo
and also very dirty.
I just had it done since the CC is just for filtering reasons. My Lambda
light did not come on at full throttle. Is it suppose to?
We shall see how efficient it is. Shall update on this forum for sure.
Posted 02 February 2005 - 07:31 AM
catalytic converter. I did it for my WAJA and no problem, though I felt I
lost a bit of torque but I gain some minute ponies up the revs.
According to my mech, the ECU might also be detecting back pressure and
this could affect the turbo boost levels. So not necessary the lambda
sensor itself but the whole system works for optimum performance. Do not
forget that the 850-T5 uses electronic boost control compared to the 940's
mechanical (pressure). So by modding the ECU map, you can actually
increase boost without tweaking any mechanical settings.
Anyway, if T5 owners out there who didn't face any problesm after de-
catting, please let me know.
Posted 02 February 2005 - 01:42 PM
tendency to get blocked just like what I experienced before especially
those without the straight flow config...n if you had a TURBOcharged
engine is gonna be worse as this blockage would result to damaging your
turbine bushing causing your engine oil to leak thruu..n that happen to me
as well..so in the end if not properly tackle will result to the turbine's
overhaul plus new set of exhaust system..just like i kena! So in the
end...overhauled my turbine n changed my exhaust to a straight flow system
without the CAT...n no problem at all till now and even better...but now I
was thinking to re do it with full stainless steel...3" downpipe no CAT
allthe way 2.5" with 2 silencers! Feb-March preoject
Posted 02 February 2005 - 04:05 PM
Do you mean you just have a straight pipe in place of your cat.conv ?
Won't it sound loud ? Or do you have a muffler there ? Like that I'll sure
de-cat it one.
Posted 02 February 2005 - 04:23 PM
bit restrictive. However, guys, do give the enviroment a thought when or
should you do so. Leave some "fresh" air for your future generations.