Rotten Egg Smell, And Engine Light On

[al moser]

HELLO

I HAVE A LEXUS 1995 IS300 WHICH HAS DEVELOPED A ROTTEN EGG SMELL AND THE ENGINE LIGHT COMES ON . SOMEONE SAID POSSIBLE THE OXYGEN SENSORS . HOW MANY ARE THERE AND COULD I CHANGE THIS MYSELF? WHERE ARE THEY LOCATED??

THANKS

AL

[SW03ES]

No such thing as a 1995 IS300. Is it an ES?

My guess is a bad catalytic converter...wouldn't be an O2 sensor. The bad cat could have fouled an O2 sensor I suppose...