The problem is... Jolline Troy,
What are you going to do when you know....(see bottom)
Turbo or non-turbo engine???
(I posted TURBO BELOW... easy to change... just look).
Your Volvo is having noticeable issues... and the indicator says Oxygen Sensor... (wrong).
Which means they are sensing something ABNORMAL...
If you put in NEW Oxygen sensors...
You really are going to be out a bit of MONEY...
but the symptoms... running poorly... possibly back firing...
Even stalling (or ... ULTIMATELY ... not running at all...
WON'T GET BETTER...
simply because you changed a SENSOR.
Your sensor is sensing an ISSUE...
Hopefully... I have convinced you that when your eye beholds Rosie O'Donnell in a ********** outfit... Your eye is not the problem... (do not pluck the EYE out... (Change channels)).
Like-wise... OXYGEN SENSORS detect issues wit EXHAUST SYSTEMS not burning cleanly ... TYPICALLY an EARLY SIGN of a CATALYTC CONVERTER failure... or a rusted muffler... ready to completely block your EXHAUST... halfway across the Gobi, Sahara, Mojave (etc.) deserts... or Manhattan in the commute.
You are MOST likely in the market for a new catalytic converter or a muffler...
Check out your parts prices on ROCKAUTO & AMAZON...
before going to your LOCAL MUFFLER SHOP...
If yu take it to the dealer... they will take it to the MUFFLER SHOP... and add $800 or $1000 to their bill....
It is not a tough job (as long as you know what penetrating oil and gloves are all about... (dirty though).
Hope i'm helping...
Located right between the header and the CATALYTIC CONVERTER
http://www.rockauto.com/en/catalog/volvo,2003,s80,2.9l+l6+turbocharged,1435911,exhaust+&+emission
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