"Leeinwind" > wrote in message
lkaboutautos.com...
> My Saturn engine dies more and more often. It happened starting around one
> year ago when I waited for a traffic light. I had to restart it. And then,
> the engine dies more and more often.
<snip>
> A mechanic checked my car, replace the four starter plugs and fuel filter.
> The problem wasn't fixed. I knew that catalytic converter of my car was
> also broken. The mechanic told me it could be the problem of "catalytic
> converter". But I am wondering "catalytic converter" can cause engine die
> during driving.

If there were a "Saturn FAQ," this would be one of the top few entries.
If you do a Google groups search (http://groups.google.com/) against this
newsgroup (rec.auto.makers.saturn), you'll find many, many articles dealing
with engines dying and/or revving low.
IIRC, Coolant Temperature Sensor and fuel problems (for example bad gas,
bad fuel pump) can cause these symptoms. Hopefully, others with better
memory and/ or more experience than I will happen along and provide more
useful information.
Good luck!