Should I fix it or sell it?

I'm looking for honest advice. I have a 2001
Mercury Villager v-6 van....loaded. It has new tires
and it's near mint condition. It has 240,000 miles
and here's the kicker. I got it from a Monastery only
which Nuns and Priests drove it, on the grounds of
the Monastery. It occasionally made a trip tobthe
airport otherwise it was driven on the grounds. I
have every single service record to the vehicle from
oil changes to tire rotation.....they took care of it
and gifted it to me in which I'm going to do the
same for a needy family at Christmas. So, what's
wrong? It just quit on the freeway.....thinking timing
belt. I had a Nissan Quest that did the same....had
non interference engine so it was an easy fix.
Same goes for this Mercury. So question is....is it
worth it and how much should I be willing to
spend. This van still has the plastic around the tv
console and the inside is brand new other than a
little wear on the driver's seat. Thanks in advance
for any input.......Vance