Not enough info, Bob.
You need to give some symptoms, tell us what kinda van, do a few preliminary
diagnostic things, etc.  "turns over fine but won't fire up" just tells us
your "cranking system" is ok but not much else..It could be just about
anything without a bit more info...
  Don Hanson

On Mon, Jul 27, 2009 at 6:52 AM, Bob Mund <ob2420@msn.com> wrote:

> I was driving to work this morning when van died at a stop light.  Tried
> starting her again with no luck.  Turns over fine but won't fire up.  Could
> this be an O2 sensor problem or possible fuel filter?  When trying to start
> her she is trying really hard to start, very strong turn over....  I'm sure
> I'll walk to her later and she'll fire right up for me but I'd like to solve
> this problem.  Thanks for any help.
>
>
>
> Bob
>